All 3rd Grade Math Resources
Example Questions
Example Question #1 : Number Sense
What is rounded to the nearest ten?
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 or greater, we round up. If the number in the ones place is or less, we round down. When we round up, the number in the tens place increases by . The numbers to the right of the tens place become 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 and the numbers to the left of the tens place stay the same.
In this case, is equal to so our rounded number is
Example Question #2 : Number Sense
What is rounded to the nearest hundred?
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 or greater, we round up. If the number in the tens place is or less, we round down. When we round up, the number in the hundreds place increases by and all the other numbers become . When we round down, the number in the hundreds place stays the same and all the other numbers become .
In this case, is less than so our rounded number is