Common Core: 3rd Grade Math : Common Core Math: Grade 3

Study concepts, example questions & explanations for Common Core: 3rd Grade Math

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Example Questions

Example Question #12 : Round Numbers To The Nearest Ten Or Hundred: Ccss.Math.Content.3.Nbt.A.1

What is \(\displaystyle 174\) rounded to the nearest hundred? 

 

 

 

Possible Answers:

\(\displaystyle 170\)

\(\displaystyle 270\)

\(\displaystyle 200\)

\(\displaystyle 300\)

\(\displaystyle 100\)

Correct answer:

\(\displaystyle 200\)

Explanation:

When we round a number to the hundreds place we look to our tens place to tell us if we round up or down. If the number in our tens place is \(\displaystyle 5\) or greater, we round up. If the number in the tens place is \(\displaystyle 4\) or less, we round down. When we round up, the number in the hundreds place increases by \(\displaystyle 1\) and all the other numbers become \(\displaystyle 0\). When we round down, the number in the hundreds place stays the same and all the other numbers become \(\displaystyle 0\).

In this case, \(\displaystyle 7\) is greater than \(\displaystyle 5\) so our rounded number is \(\displaystyle 200.\)

Example Question #94 : How To Find The Part From The Whole

What is \(\displaystyle 287\) rounded to the nearest hundred? 

 

 

 

Possible Answers:

\(\displaystyle 300\)

\(\displaystyle 400\)

\(\displaystyle 200\)

\(\displaystyle 280\)

\(\displaystyle 380\)

Correct answer:

\(\displaystyle 300\)

Explanation:

When we round a number to the hundreds place we look to our tens place to tell us if we round up or down. If the number in our tens place is \(\displaystyle 5\) or greater, we round up. If the number in the tens place is \(\displaystyle 4\) or less, we round down. When we round up, the number in the hundreds place increases by \(\displaystyle 1\) and all the other numbers become \(\displaystyle 0\). When we round down, the number in the hundreds place stays the same and all the other numbers become \(\displaystyle 0\).

In this case, \(\displaystyle 8\) is greater than \(\displaystyle 5\) so our rounded number is \(\displaystyle 300.\)

Example Question #95 : How To Find The Part From The Whole

What is \(\displaystyle 371\) rounded to the nearest hundred? 

 

Possible Answers:

\(\displaystyle 500\)

\(\displaystyle 571\)

\(\displaystyle 400\)

\(\displaystyle 470\)

\(\displaystyle 471\)

Correct answer:

\(\displaystyle 400\)

Explanation:

When we round a number to the hundreds place we look to our tens place to tell us if we round up or down. If the number in our tens place is \(\displaystyle 5\) or greater, we round up. If the number in the tens place is \(\displaystyle 4\) or less, we round down. When we round up, the number in the hundreds place increases by \(\displaystyle 1\) and all the other numbers become \(\displaystyle 0\). When we round down, the number in the hundreds place stays the same and all the other numbers become \(\displaystyle 0\).

In this case, \(\displaystyle 7\) is greater than \(\displaystyle 5\) so our rounded number is \(\displaystyle 400.\)

Example Question #96 : How To Find The Part From The Whole

What is \(\displaystyle 463\) rounded to the nearest hundred? 

 

Possible Answers:

\(\displaystyle 400\)

\(\displaystyle 500\)

\(\displaystyle 700\)

\(\displaystyle 600\)

\(\displaystyle 300\)

Correct answer:

\(\displaystyle 500\)

Explanation:

When we round a number to the hundreds place we look to our tens place to tell us if we round up or down. If the number in our tens place is \(\displaystyle 5\) or greater, we round up. If the number in the tens place is \(\displaystyle 4\) or less, we round down. When we round up, the number in the hundreds place increases by \(\displaystyle 1\) and all the other numbers become \(\displaystyle 0\). When we round down, the number in the hundreds place stays the same and all the other numbers become \(\displaystyle 0\).

In this case, \(\displaystyle 6\) is greater than \(\displaystyle 5\) so our rounded number is \(\displaystyle 500.\)

Example Question #2181 : Isee Lower Level (Grades 5 6) Quantitative Reasoning

What is \(\displaystyle 555\) rounded to the nearest hundred? 

 

 

Possible Answers:

\(\displaystyle 550\)

\(\displaystyle 600\)

\(\displaystyle 500\)

\(\displaystyle 700\)

\(\displaystyle 650\)

Correct answer:

\(\displaystyle 600\)

Explanation:

When we round a number to the hundreds place we look to our tens place to tell us if we round up or down. If the number in our tens place is \(\displaystyle 5\) or greater, we round up. If the number in the tens place is \(\displaystyle 4\) or less, we round down. When we round up, the number in the hundreds place increases by \(\displaystyle 1\) and all the other numbers become \(\displaystyle 0\). When we round down, the number in the hundreds place stays the same and all the other numbers become \(\displaystyle 0\).

In this case, \(\displaystyle 5\) is equal to \(\displaystyle 5\) so our rounded number is \(\displaystyle 600.\)

Example Question #484 : Whole And Part

What is \(\displaystyle 698\) rounded to the nearest hundred? 

 

 

 

Possible Answers:

\(\displaystyle 300\)

\(\displaystyle 600\)

\(\displaystyle 400\)

\(\displaystyle 500\)

\(\displaystyle 700\)

Correct answer:

\(\displaystyle 700\)

Explanation:

When we round a number to the hundreds place we look to our tens place to tell us if we round up or down. If the number in our tens place is \(\displaystyle 5\) or greater, we round up. If the number in the tens place is \(\displaystyle 4\) or less, we round down. When we round up, the number in the hundreds place increases by \(\displaystyle 1\) and all the other numbers become \(\displaystyle 0\). When we round down, the number in the hundreds place stays the same and all the other numbers become \(\displaystyle 0\).

In this case, \(\displaystyle 9\) is greater than \(\displaystyle 5\) so our rounded number is \(\displaystyle 700.\)

Example Question #101 : How To Find The Part From The Whole

What is \(\displaystyle 734\) rounded to the nearest hundred? 

 

 

Possible Answers:

\(\displaystyle 700\)

\(\displaystyle 600\)

\(\displaystyle 634\)

\(\displaystyle 834\)

\(\displaystyle 800\)

Correct answer:

\(\displaystyle 700\)

Explanation:

When we round a number to the hundreds place we look to our tens place to tell us if we round up or down. If the number in our tens place is \(\displaystyle 5\) or greater, we round up. If the number in the tens place is \(\displaystyle 4\) or less, we round down. When we round up, the number in the hundreds place increases by \(\displaystyle 1\) and all the other numbers become \(\displaystyle 0\). When we round down, the number in the hundreds place stays the same and all the other numbers become \(\displaystyle 0\).

In this case, \(\displaystyle 3\) is less than \(\displaystyle 5\) so our rounded number is \(\displaystyle 700.\)

Example Question #811 : Common Core Math: Grade 3

What is \(\displaystyle 816\) rounded to the nearest hundred? 

 

 

 

Possible Answers:

\(\displaystyle 600\)

\(\displaystyle 800\)

\(\displaystyle 400\)

\(\displaystyle 500\)

\(\displaystyle 700\)

Correct answer:

\(\displaystyle 800\)

Explanation:

When we round a number to the hundreds place we look to our tens place to tell us if we round up or down. If the number in our tens place is \(\displaystyle 5\) or greater, we round up. If the number in the tens place is \(\displaystyle 4\) or less, we round down. When we round up, the number in the hundreds place increases by \(\displaystyle 1\) and all the other numbers become \(\displaystyle 0\). When we round down, the number in the hundreds place stays the same and all the other numbers become \(\displaystyle 0\).

In this case, \(\displaystyle 1\) is less than \(\displaystyle 5\) so our rounded number is \(\displaystyle 800.\)

Example Question #486 : Whole And Part

What is \(\displaystyle 927\) rounded to the nearest hundred? 

 

 

Possible Answers:

\(\displaystyle 820\)

\(\displaystyle 700\)

\(\displaystyle 800\)

\(\displaystyle 920\)

\(\displaystyle 900\)

Correct answer:

\(\displaystyle 900\)

Explanation:

When we round a number to the hundreds place we look to our tens place to tell us if we round up or down. If the number in our tens place is \(\displaystyle 5\) or greater, we round up. If the number in the tens place is \(\displaystyle 4\) or less, we round down. When we round up, the number in the hundreds place increases by \(\displaystyle 1\) and all the other numbers become \(\displaystyle 0\). When we round down, the number in the hundreds place stays the same and all the other numbers become \(\displaystyle 0\).

In this case, \(\displaystyle 2\) is less than \(\displaystyle 5\) so our rounded number is \(\displaystyle 900.\)

Example Question #812 : Common Core Math: Grade 3

What is \(\displaystyle 121\) rounded to the nearest hundred? 

 

 

Possible Answers:

\(\displaystyle 100\)

\(\displaystyle 120\)

\(\displaystyle 220\)

\(\displaystyle 300\)

\(\displaystyle 200\)

Correct answer:

\(\displaystyle 100\)

Explanation:

When we round a number to the hundreds place we look to our tens place to tell us if we round up or down. If the number in our tens place is \(\displaystyle 5\) or greater, we round up. If the number in the tens place is \(\displaystyle 4\) or less, we round down. When we round up, the number in the hundreds place increases by \(\displaystyle 1\) and all the other numbers become \(\displaystyle 0\). When we round down, the number in the hundreds place stays the same and all the other numbers become \(\displaystyle 0\).

In this case, \(\displaystyle 2\) is less than \(\displaystyle 5\) so our rounded number is \(\displaystyle 100.\)

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