This question tests 2nd grade understanding of three-digit numbers and place value, including identifying the value of digits in hundreds, tens, and ones places (CCSS 2.NBT.A.1: Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones). In a three-digit number, each digit has a different value based on its position: the leftmost digit is in the hundreds place (tells how many hundreds, or groups of 100), the middle digit is in the tens place (tells how many tens, or groups of 10), and the rightmost digit is in the ones place (tells how many ones). For example, in 726: the 7 is in the hundreds place and represents 700 (7 hundreds or 7 × 100), the 2 is in the tens place and represents 20 (2 tens or 2 × 10), and the 6 is in the ones place and represents 6 (6 ones or 6 × 1); the digit tells us the numeral, while the value tells us what that digit is worth based on its position. In this problem, the expanded form 700 + 20 + 6 must be written in standard form; to find the answer, add the place values (700 + 20 + 6 = 726). Choice A is correct because adding the place values 700 + 20 + 6 equals 726 in standard form; this demonstrates accurate understanding of place value positions and digit values. Choice C represents an expanded form calculation error (said 700 + 20 + 6 = 706 or added incorrectly), which typically happens when students calculate incorrectly. To help students: Practice expanded form: 'Break apart the number; 726 is made of 7 hundreds (700) plus 2 tens (20) plus 6 ones (6); write: 726 = 700 + 20 + 6.' Connect representations: show the same number as standard form (726), expanded form (700 + 20 + 6), word form ('seven hundred twenty-six'), base-ten blocks (7 flats, 2 rods, 6 units), and place value chart.

This question tests 2nd grade understanding of three-digit numbers and place value, including identifying the value of digits in hundreds, tens, and ones places (CCSS 2.NBT.A.1: Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones). In a three-digit number, each digit has a different value based on its position: the leftmost digit is in the hundreds place (tells how many hundreds, or groups of 100), the middle digit is in the tens place (tells how many tens, or groups of 10), and the rightmost digit is in the ones place (tells how many ones). For example, in 472: the 4 is in the hundreds place and represents 400 (4 hundreds or 4 × 100), the 7 is in the tens place and represents 70 (7 tens or 7 × 10), and the 2 is in the ones place and represents 2 (2 ones or 2 × 1); the digit tells us the numeral, while the value tells us what that digit is worth based on its position. In this problem, the number 472 is shown and the student must find the value of the digit 4; to find the answer, recognize that 4 is in the hundreds place, which means it represents 4 hundreds or 400 (4 × 100). Choice B is correct because the value of 4 in the hundreds place is 400 (4 × 100 = 400); this demonstrates accurate understanding of place value positions and digit values. Choice A represents confusing the hundreds place with the tens place (gave 40 when asked for the value of 4 in hundreds), which typically happens when students mix up place value positions. To help students: Use a place value chart with columns labeled Hundreds | Tens | Ones, write the number 472, and put each digit in the correct column (4 in Hundreds, 7 in Tens, 2 in Ones); teach: 'The 4 is the digit, 400 is the value (4 × 100).' Use base-ten blocks hands-on: show 4 flats (hundreds), 7 rods (tens), 2 units (ones); count the value of each type (400, 70, 2), and combine for 472 total.

This question tests 2nd grade understanding of three-digit numbers and place value, including identifying the value of digits in hundreds, tens, and ones places (CCSS 2.NBT.A.1: Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones). In a three-digit number, each digit has a different value based on its position: the leftmost digit is in the hundreds place (tells how many hundreds, or groups of 100), the middle digit is in the tens place (tells how many tens, or groups of 10), and the rightmost digit is in the ones place (tells how many ones). For example, in 502: the 5 is in the hundreds place and represents 500 (5 hundreds or 5 × 100), the 0 is in the tens place and represents 0 (0 tens or 0 × 10), and the 2 is in the ones place and represents 2 (2 ones or 2 × 1); the digit tells us the numeral, while the value tells us what that digit is worth based on its position. In this problem, the description '5 hundreds, 0 tens, and 2 ones' is given and the student must find the number; to find the answer, compose the place values (5 hundreds = 500, 0 tens = 0, 2 ones = 2; total = 502). Choice A is correct because composing 5 hundreds (500) + 0 tens (0) + 2 ones (2) = 502; this demonstrates accurate understanding of place value positions and digit values. Choice B represents ignoring the zero placeholder (said 502 = 520 or mixed up zeros), which typically happens when students don't understand place value with zeros. To help students: Practice with zero: 502 has 5 hundreds (500), 0 tens (0), 2 ones (2); the zero holds the tens place. Use a place value chart with columns labeled Hundreds | Tens | Ones, put 5 in Hundreds, 0 in Tens, 2 in Ones to form 502; watch for ignoring zero placeholders.

This question tests 2nd grade understanding of three-digit numbers and place value, including identifying the value of digits in hundreds, tens, and ones places (CCSS 2.NBT.A.1: Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones). In a three-digit number, each digit has a different value based on its position. The leftmost digit is in the hundreds place (tells how many hundreds, or groups of 100). The middle digit is in the tens place (tells how many tens, or groups of 10). The rightmost digit is in the ones place (tells how many ones). For example, in 347: the 3 is in the hundreds place and represents 300 (3 hundreds or 3 × 100), the 4 is in the tens place and represents 40 (4 tens or 4 × 10), and the 7 is in the ones place and represents 7 (7 ones or 7 × 1). The digit tells us the numeral; the value tells us what that digit is worth based on its position. In this problem, the word form 'six hundred twenty-one' must be written as a number. To find the answer, convert words to digits (six hundred = 6 in hundreds, twenty = 2 in tens, one = 1 in ones = 621). Choice B is correct because 'six hundred twenty-one' converts to 621 in standard form. This demonstrates accurate understanding of place value positions and digit values. Choice A represents word form error (converted 'six hundred twenty-one' to 601 or misinterpreted word forms). This error typically happens when students misinterpret word forms. To help students: Use place value chart with columns labeled Hundreds | Tens | Ones. Write number 621, put each digit in correct column (6 in Hundreds, 2 in Tens, 1 in Ones). Teach: 'The 6 is the digit, 600 is the value (6 × 100).' Use base-ten blocks hands-on: show 6 flats (hundreds), 2 rods (tens), 1 unit (ones); count value of each type (600, 20, 1), combine for 621 total. Practice expanded form: 'Break apart the number. 621 is made of 6 hundreds (600) plus 2 tens (20) plus 1 one (1). Write: 621 = 600 + 20 + 1.' Connect representations: show same number as standard form (621), expanded form (600 + 20 + 1), word form ('six hundred twenty-one'), base-ten blocks (6 flats, 2 rods, 1 unit), and place value chart. Emphasize position determines value: 'Same digit, different place, different value. In 111, first 1 = 100, second 1 = 10, third 1 = 1.' Practice with zero: 601 has 6 hundreds (600), 0 tens (0), 1 one (1); the zero holds tens place. Watch for: confusing digit with value, wrong place identified, wrong value given, expanded form calculation errors, digit order mixed up, word form conversion errors, ignoring zero placeholders.

This question tests 2nd grade understanding of three-digit numbers and place value, including identifying the value of digits in hundreds, tens, and ones places (CCSS 2.NBT.A.1: Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones). In a three-digit number, each digit has a different value based on its position. The leftmost digit is in the hundreds place (tells how many hundreds, or groups of 100). The middle digit is in the tens place (tells how many tens, or groups of 10). The rightmost digit is in the ones place (tells how many ones). For example, in 347: the 3 is in the hundreds place and represents 300 (3 hundreds or 3 × 100), the 4 is in the tens place and represents 40 (4 tens or 4 × 10), and the 7 is in the ones place and represents 7 (7 ones or 7 × 1). The digit tells us the numeral; the value tells us what that digit is worth based on its position. In this problem, base-ten blocks show 5 flats, 2 rods, 6 units. To find the answer, count blocks (5 flats = 5 hundreds = 500, 2 rods = 2 tens = 20, 6 units = 6 ones = 6; total = 526). Choice A is correct because counting 5 flats (500) + 2 rods (20) + 6 units (6) = 526 total. This demonstrates accurate understanding of place value positions and digit values. Choice B represents digit order error (said 526 = 562 or mixed up digit order). This error typically happens when students mix up digit order. To help students: Use place value chart with columns labeled Hundreds | Tens | Ones. Write number 526, put each digit in correct column (5 in Hundreds, 2 in Tens, 6 in Ones). Teach: 'The 5 is the digit, 500 is the value (5 × 100).' Use base-ten blocks hands-on: show 5 flats (hundreds), 2 rods (tens), 6 units (ones); count value of each type (500, 20, 6), combine for 526 total. Practice expanded form: 'Break apart the number. 526 is made of 5 hundreds (500) plus 2 tens (20) plus 6 ones (6). Write: 526 = 500 + 20 + 6.' Connect representations: show same number as standard form (526), expanded form (500 + 20 + 6), word form ('five hundred twenty-six'), base-ten blocks (5 flats, 2 rods, 6 units), and place value chart. Emphasize position determines value: 'Same digit, different place, different value. In 555, first 5 = 500, second 5 = 50, third 5 = 5.' Practice with zero: 505 has 5 hundreds (500), 0 tens (0), 5 ones (5); the zero holds tens place. Watch for: confusing digit with value, wrong place identified, wrong value given, expanded form calculation errors, digit order mixed up, word form conversion errors, ignoring zero placeholders.

This question tests 2nd grade understanding of three-digit numbers and place value, including identifying the value of digits in hundreds, tens, and ones places (CCSS 2.NBT.A.1: Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones). In a three-digit number, each digit has a different value based on its position. The leftmost digit is in the hundreds place (tells how many hundreds, or groups of 100). The middle digit is in the tens place (tells how many tens, or groups of 10). The rightmost digit is in the ones place (tells how many ones). For example, in 347: the 3 is in the hundreds place and represents 300 (3 hundreds or 3 × 100), the 4 is in the tens place and represents 40 (4 tens or 4 × 10), and the 7 is in the ones place and represents 7 (7 ones or 7 × 1). The digit tells us the numeral; the value tells us what that digit is worth based on its position. In this problem, the number 842 must be written in expanded form. To find the answer, break it into place values: 8 hundreds (800), 4 tens (40), 2 ones (2), so 800 + 40 + 2. Choice A is correct because 800 + 40 + 2 represents the expanded form of 842. This demonstrates accurate understanding of place value positions and digit values. Choice B represents wrong place value (said 80 + 40 + 2 instead of 800 + 40 + 2), or confusing hundreds with tens. This error typically happens when students confuse place value positions, calculate incorrectly. To help students: Use place value chart with columns labeled Hundreds | Tens | Ones. Write number 842, put each digit in correct column (8 in Hundreds, 4 in Tens, 2 in Ones). Teach: 'The 8 is the digit, 800 is the value (8 × 100).' Use base-ten blocks hands-on: show 8 flats (hundreds), 4 rods (tens), 2 units (ones); count value of each type (800, 40, 2), combine for 842 total. Practice expanded form: 'Break apart the number. 842 is made of 8 hundreds (800) plus 4 tens (40) plus 2 ones (2). Write: 842 = 800 + 40 + 2.' Connect representations: show same number as standard form (842), expanded form (800 + 40 + 2), word form ('eight hundred forty-two'), base-ten blocks (8 flats, 4 rods, 2 units), and place value chart. Emphasize position determines value: 'Same digit, different place, different value. In 888, first 8 = 800, second 8 = 80, third 8 = 8.' Practice with zero: 802 has 8 hundreds (800), 0 tens (0), 2 ones (2); the zero holds tens place. Watch for: confusing digit with value, wrong place identified, wrong value given, expanded form calculation errors, digit order mixed up, word form conversion errors, ignoring zero placeholders.

This question tests 2nd grade understanding of three-digit numbers and place value, including identifying the value of digits in hundreds, tens, and ones places (CCSS 2.NBT.A.1: Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones). In a three-digit number, each digit has a different value based on its position. The leftmost digit is in the hundreds place (tells how many hundreds, or groups of 100). The middle digit is in the tens place (tells how many tens, or groups of 10). The rightmost digit is in the ones place (tells how many ones). For example, in 347: the 3 is in the hundreds place and represents 300 (3 hundreds or 3 × 100), the 4 is in the tens place and represents 40 (4 tens or 4 × 10), and the 7 is in the ones place and represents 7 (7 ones or 7 × 1). The digit tells us the numeral; the value tells us what that digit is worth based on its position. In this problem, the number 638 is shown and the student must identify the digit in the hundreds place. To find the answer, identify the leftmost digit (6) as the hundreds place digit. Choice B is correct because the hundreds place is the leftmost position in 638, where the digit 6 is located. This demonstrates accurate understanding of place value positions and digit values. Choice A represents identifying the wrong place (gave 8 when asked for hundreds digit 6), or confusing the ones place with hundreds. This error typically happens when students confuse place value positions, mix up digit order. To help students: Use place value chart with columns labeled Hundreds | Tens | Ones. Write number 638, put each digit in correct column (6 in Hundreds, 3 in Tens, 8 in Ones). Teach: 'The 6 is the digit, 600 is the value (6 × 100).' Use base-ten blocks hands-on: show 6 flats (hundreds), 3 rods (tens), 8 units (ones); count value of each type (600, 30, 8), combine for 638 total. Practice expanded form: 'Break apart the number. 638 is made of 6 hundreds (600) plus 3 tens (30) plus 8 ones (8). Write: 638 = 600 + 30 + 8.' Connect representations: show same number as standard form (638), expanded form (600 + 30 + 8), word form ('six hundred thirty-eight'), base-ten blocks (6 flats, 3 rods, 8 units), and place value chart. Emphasize position determines value: 'Same digit, different place, different value. In 666, first 6 = 600, second 6 = 60, third 6 = 6.' Practice with zero: 605 has 6 hundreds (600), 0 tens (0), 5 ones (5); the zero holds tens place. Watch for: confusing digit with value, wrong place identified, wrong value given, expanded form calculation errors, digit order mixed up, word form conversion errors, ignoring zero placeholders.

This question tests 2nd grade understanding of three-digit numbers and place value, including identifying the value of digits in hundreds, tens, and ones places (CCSS 2.NBT.A.1: Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones). In a three-digit number, each digit has a different value based on its position. The leftmost digit is in the hundreds place (tells how many hundreds, or groups of 100). The middle digit is in the tens place (tells how many tens, or groups of 10). The rightmost digit is in the ones place (tells how many ones). For example, in 347: the 3 is in the hundreds place and represents 300 (3 hundreds or 3 × 100), the 4 is in the tens place and represents 40 (4 tens or 4 × 10), and the 7 is in the ones place and represents 7 (7 ones or 7 × 1). The digit tells us the numeral; the value tells us what that digit is worth based on its position. In this problem, expanded form 500 + 20 + 9 must be written in standard form. To find the answer, add the place values (500 + 20 + 9 = 529). Choice A is correct because adding the place values 500 + 20 + 9 equals 529 in standard form. This demonstrates accurate understanding of place value positions and digit values. Choice B represents digit order error (said 500 + 20 + 9 = 592 or mixed up digits). This error typically happens when students mix up digit order, calculate incorrectly. To help students: Use place value chart with columns labeled Hundreds | Tens | Ones. Write expanded form 500 + 20 + 9, put each value in correct column (5 in Hundreds, 2 in Tens, 9 in Ones). Teach: 'The 5 is the digit, 500 is the value (5 × 100).' Use base-ten blocks hands-on: show 5 flats (hundreds), 2 rods (tens), 9 units (ones); count value of each type (500, 20, 9), combine for 529 total. Practice expanded form: 'Break apart the number. 529 is made of 5 hundreds (500) plus 2 tens (20) plus 9 ones (9). Write: 529 = 500 + 20 + 9.' Connect representations: show same number as standard form (529), expanded form (500 + 20 + 9), word form ('five hundred twenty-nine'), base-ten blocks (5 flats, 2 rods, 9 units), and place value chart. Emphasize position determines value: 'Same digit, different place, different value. In 555, first 5 = 500, second 5 = 50, third 5 = 5.' Practice with zero: 505 has 5 hundreds (500), 0 tens (0), 5 ones (5); the zero holds tens place. Watch for: confusing digit with value, wrong place identified, wrong value given, expanded form calculation errors, digit order mixed up, word form conversion errors, ignoring zero placeholders.

This question tests 2nd grade understanding of three-digit numbers and place value, including identifying the value of digits in hundreds, tens, and ones places (CCSS 2.NBT.A.1: Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones). In a three-digit number, each digit has a different value based on its position. The leftmost digit is in the hundreds place (tells how many hundreds, or groups of 100). The middle digit is in the tens place (tells how many tens, or groups of 10). The rightmost digit is in the ones place (tells how many ones). For example, in 347: the 3 is in the hundreds place and represents 300 (3 hundreds or 3 × 100), the 4 is in the tens place and represents 40 (4 tens or 4 × 10), and the 7 is in the ones place and represents 7 (7 ones or 7 × 1). The digit tells us the numeral; the value tells us what that digit is worth based on its position. In this problem, the number 705 is given and the student must find how many hundreds are in the number. To find the answer, recognize the digit in the hundreds place (7) means 7 hundreds. Choice A is correct because the hundreds place in 705 has the digit 7, representing 7 hundreds. This demonstrates accurate understanding of place value positions and digit values. Choice B represents confusing the number of hundreds with the value of the tens digit (gave 70 when asked for 7 hundreds). This error typically happens when students don't distinguish between digit and its value. To help students: Use place value chart with columns labeled Hundreds | Tens | Ones. Write number 705, put each digit in correct column (7 in Hundreds, 0 in Tens, 5 in Ones). Teach: 'The 7 is the digit, 700 is the value (7 × 100).' Use base-ten blocks hands-on: show 7 flats (hundreds), 0 rods (tens), 5 units (ones); count value of each type (700, 0, 5), combine for 705 total. Practice expanded form: 'Break apart the number. 705 is made of 7 hundreds (700) plus 0 tens (0) plus 5 ones (5). Write: 705 = 700 + 0 + 5.' Connect representations: show same number as standard form (705), expanded form (700 + 0 + 5), word form ('seven hundred five'), base-ten blocks (7 flats, 0 rods, 5 units), and place value chart. Emphasize position determines value: 'Same digit, different place, different value. In 777, first 7 = 700, second 7 = 70, third 7 = 7.' Practice with zero: 705 has 7 hundreds (700), 0 tens (0), 5 ones (5); the zero holds tens place. Watch for: confusing digit with value, wrong place identified, wrong value given, expanded form calculation errors, digit order mixed up, word form conversion errors, ignoring zero placeholders.

This question tests 2nd grade understanding of three-digit numbers and place value, including identifying the value of digits in hundreds, tens, and ones places (CCSS 2.NBT.A.1: Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones). In a three-digit number, each digit has a different value based on its position. The leftmost digit is in the hundreds place (tells how many hundreds, or groups of 100). The middle digit is in the tens place (tells how many tens, or groups of 10). The rightmost digit is in the ones place (tells how many ones). For example, in 347: the 3 is in the hundreds place and represents 300 (3 hundreds or 3 × 100), the 4 is in the tens place and represents 40 (4 tens or 4 × 10), and the 7 is in the ones place and represents 7 (7 ones or 7 × 1). The digit tells us the numeral; the value tells us what that digit is worth based on its position. In this problem, the number 719 is given and the student must identify what the 7 represents. To find the answer, recognize the 7 in the hundreds place represents 700 (7 × 100). Choice C is correct because the value of 7 in the hundreds place is 700 (7 × 100 = 700). This demonstrates accurate understanding of place value positions and digit values. Choice A represents confusing digit with value (gave 7 when asked for value 700), or giving the digit instead of its value. This error typically happens when students don't distinguish between digit and its value, confuse place value positions. To help students: Use place value chart with columns labeled Hundreds | Tens | Ones. Write number 719, put each digit in correct column (7 in Hundreds, 1 in Tens, 9 in Ones). Teach: 'The 7 is the digit, 700 is the value (7 × 100).' Use base-ten blocks hands-on: show 7 flats (hundreds), 1 rod (tens), 9 units (ones); count value of each type (700, 10, 9), combine for 719 total. Practice expanded form: 'Break apart the number. 719 is made of 7 hundreds (700) plus 1 ten (10) plus 9 ones (9). Write: 719 = 700 + 10 + 9.' Connect representations: show same number as standard form (719), expanded form (700 + 10 + 9), word form ('seven hundred nineteen'), base-ten blocks (7 flats, 1 rod, 9 units), and place value chart. Emphasize position determines value: 'Same digit, different place, different value. In 777, first 7 = 700, second 7 = 70, third 7 = 7.' Practice with zero: 705 has 7 hundreds (700), 0 tens (0), 5 ones (5); the zero holds tens place. Watch for: confusing digit with value, wrong place identified, wrong value given, expanded form calculation errors, digit order mixed up, word form conversion errors, ignoring zero placeholders.