Common Core: 3rd Grade Math : Round Numbers to the Nearest Ten or Hundred: CCSS.Math.Content.3.NBT.A.1

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

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Example Questions

Example Question #81 : Round Numbers To The Nearest Ten Or Hundred: Ccss.Math.Content.3.Nbt.A.1

What is \displaystyle 368 rounded to the nearest ten? 

 

 

Possible Answers:

\displaystyle 400

\displaystyle 380

\displaystyle 300

\displaystyle 200

\displaystyle 370

Correct answer:

\displaystyle 370

Explanation:

When we round a number to the tens place we look to our ones place to tell us if we round up or down. If the number in our ones place is \displaystyle 5 or greater, we round up. If the number in the ones place is \displaystyle 4 or less, we round down. When we round up, the number in the tens place increases by \displaystyle 1. The numbers to the right of the tens place become \displaystyle 0 and the numbers to the left of the tens place stay the same. When we round down, the number in the tens place stays the same. The numbers to the right of the tens place become \displaystyle 0 and the numbers to the left of the tens place stay the same.

In this case, \displaystyle 6 is greater than \displaystyle 5 so our rounded number is \displaystyle 370.

Example Question #4371 : Ssat Elementary Level Quantitative (Math)

What is \displaystyle 451 rounded to the nearest ten? 

 

 

Possible Answers:

\displaystyle 500

\displaystyle 400

\displaystyle 460

\displaystyle 550

\displaystyle 450

Correct answer:

\displaystyle 450

Explanation:

When we round a number to the tens place we look to our ones place to tell us if we round up or down. If the number in our ones place is \displaystyle 5 or greater, we round up. If the number in the ones place is \displaystyle 4 or less, we round down. When we round up, the number in the tens place increases by \displaystyle 1. The numbers to the right of the tens place become \displaystyle 0 and the numbers to the left of the tens place stay the same. When we round down, the number in the tens place stays the same. The numbers to the right of the tens place become \displaystyle 0 and the numbers to the left of the tens place stay the same.

In this case, \displaystyle 1 is less than \displaystyle 5 so our rounded number is \displaystyle 450.

Example Question #881 : Common Core Math: Grade 3

What is \displaystyle 882 rounded to the nearest ten? 

 

 

Possible Answers:

\displaystyle 890

\displaystyle 800

\displaystyle 900

\displaystyle 880

\displaystyle 870

Correct answer:

\displaystyle 880

Explanation:

When we round a number to the tens place we look to our ones place to tell us if we round up or down. If the number in our ones place is \displaystyle 5 or greater, we round up. If the number in the ones place is \displaystyle 4 or less, we round down. When we round up, the number in the tens place increases by \displaystyle 1. The numbers to the right of the tens place become \displaystyle 0 and the numbers to the left of the tens place stay the same. When we round down, the number in the tens place stays the same. The numbers to the right of the tens place become \displaystyle 0 and the numbers to the left of the tens place stay the same.

In this case, \displaystyle 2 is less than \displaystyle 5 so our rounded number is \displaystyle 880.

Example Question #552 : Whole And Part

What is \displaystyle 954 rounded to the nearest ten? 

 

 

Possible Answers:

\displaystyle 940

\displaystyle 960

\displaystyle 930

\displaystyle 900

\displaystyle 950

Correct answer:

\displaystyle 950

Explanation:

When we round a number to the tens place we look to our ones place to tell us if we round up or down. If the number in our ones place is \displaystyle 5 or greater, we round up. If the number in the ones place is \displaystyle 4 or less, we round down. When we round up, the number in the tens place increases by \displaystyle 1. The numbers to the right of the tens place become \displaystyle 0 and the numbers to the left of the tens place stay the same. When we round down, the number in the tens place stays the same. The numbers to the right of the tens place become \displaystyle 0 and the numbers to the left of the tens place stay the same.

In this case, \displaystyle 4 is less than \displaystyle 5 so our rounded number is \displaystyle 950.

Example Question #881 : Common Core Math: Grade 3

What is \displaystyle 121 rounded to the nearest hundred? 

 

 

 

Possible Answers:

\displaystyle 130

\displaystyle 110

\displaystyle 100

\displaystyle 120

\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.

Example Question #882 : Common Core Math: Grade 3

What is \displaystyle 839 rounded to the nearest hundred? 

 

 

Possible Answers:

\displaystyle 840

\displaystyle 700

\displaystyle 850

\displaystyle 800

\displaystyle 830

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 3 is less than \displaystyle 5 so our rounded number is \displaystyle 800.

Example Question #169 : How To Find The Part From The Whole

What is \displaystyle 741 rounded to the nearest hundred? 

 

 

Possible Answers:

\displaystyle 740

\displaystyle 700

\displaystyle 640

\displaystyle 800

\displaystyle 600

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 4 is less than \displaystyle 5 so our rounded number is \displaystyle 700.

Example Question #883 : Common Core Math: Grade 3

What is \displaystyle 393 rounded to the nearest hundred? 

 

 

Possible Answers:

\displaystyle 500

\displaystyle 300

\displaystyle 400

\displaystyle 390

\displaystyle 380

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 9 is greater than \displaystyle 5 so our rounded number is \displaystyle 400.

Example Question #882 : Common Core Math: Grade 3

What is \displaystyle 269 rounded to the nearest hundred? 

 

 

Possible Answers:

\displaystyle 270

\displaystyle 360

\displaystyle 260

\displaystyle 300

\displaystyle 200

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 6 is greater than \displaystyle 5 so our rounded number is \displaystyle 300.

Example Question #884 : Common Core Math: Grade 3

What is \displaystyle 773 rounded to the nearest hundred? 

 

 

Possible Answers:

\displaystyle 770

\displaystyle 780

\displaystyle 870

\displaystyle 880

\displaystyle 800

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 7 is greater than \displaystyle 5 so our rounded number is \displaystyle 800.

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