Rounding

Rounding would be most helpful for:

• finding out exactly how many people are coming to your birthday party

• getting an estimate of how many packages of balloons to buy

• figuring out exactly how old you’ll be in 10 years

• figuring out exactly how many miles you live from the balloon store

Which two multiples of 10 is 48 between?

• 70 and 80

• 700 and 800

• 40 and 50

• 400 and 500

Which digit tells you whether a number will be rounded up or down?

• the digit to the right of the place value you’re rounding to

• the digit in the place value you’re rounding to

• the digit to the left of the place value you’re rounding to

• always the last digit of a number

Which multiple of 100 is 531 closest to?

• 300

• 500

• 600

• 100

When 165 is rounded to the nearest 100, the digit in its hundreds place ________.

• changes to a zero

• stays the same

• increases by 1

• decreases by 1

Round 85 to the nearest 10.

• 50

• 60

• 80

• 90

Round 729 to the nearest 100.

• 720

• 730

• 700

• 800

Round 615 to the nearest 10.

• 610

• 620

• 600

• 700

Round each number to the nearest 10 to estimate the sum.

McKayla checked out 11 books from the library on Tuesday. On Wednesday, she went back to the library and checked out 23 more books. About how many books did McKayla check out in total?

• 20

• 30

• 40

• 50

Round each number to the nearest 100 to estimate the sum.

Joy’s garden produced 447 green beans. Sammy’s garden produced 392 green beans. About how many green beans did Joy and Sammy’s gardens produce in total?

• 400

• 500

• 700

• 800