4.NBT.3 Rounding Whole Numbers Flashcard

Front

What does it mean to round a number?

Back

Rounding a number means adjusting it to the nearest specified place value (like ten, hundred, or thousand) to make it simpler or easier to work with.

Front

How do you round a number to the nearest ten?

Back

Look at the digit in the ones place. If it is 5 or more, round up. If it is 4 or less, round down.

Front

Round 4,567 to the nearest hundred.

Back

4,600

Front

Round 12,345 to the nearest ten.

Back

12,350

Front

What is 45,678 rounded to the nearest ten?

Back

45,680

Front

Round 76,981 to the nearest thousand.

Back

77,000

Front

Round 1,234 to the nearest thousand.

Back

1,000

Front

What is the nearest hundred to 4,500?

Back

4,500 (it is already at the nearest hundred).

Front

If a number ends in 5, what do you do when rounding to the nearest ten?

Back

You round up.

Front

What is the rule for rounding numbers?

Back

If the digit to the right of the rounding place is 5 or more, round up. If it is 4 or less, round down.