Round to Estimate Sums and Differences

Round to Estimate Sums and Differences

Multiple Choice

Round these numbers in order to estimate the sum or difference.

38 + 27

• 30 + 30

• 40 + 30

Multiple Choice

Round these numbers in order to estimate the sum or difference.

375 + 359

• 400 + 400

• 375 + 360

• 350 + 350

Multiple Choice

Donald bought a candy bar for 39 cents and a soda for 52 cents. ABOUT how much did Donald spend in all?

• 40 cents

• 60 cents

• 80 cents

• 90 cents

Multiple Choice

There are 79 students who take art class and 139 students who take music class. ABOUT how many more students take music than art?

• 40

• 60

• 80

• 220

Multiple Choice

Donna needs 58 tickets to buy a stuffed animal at the school store. She has 39 tickets. About how many more tickets does Donna need?

• 10

• 20

• 30

• 40

Multiple Choice

A bag of sugar holds 128 ounces. You use 18 ounces to make cookies. Which would be the best way to find about how much sugar you have left?

• 130 - 20

• 130 - 10

• 120 - 30

• 120 - 10

Multiple Choice

Gary earned 39 points on field day. Molly earned 52 points. Which would be the best way to find about how many points Gary and Molly earned in all?

• 30 + 40

• 30 + 50

• 40 + 50

• 50 + 50

Multiple Choice

Cliff earned $61 for doing yard work. Bill earned $49 for painting houses. About how much more than Bill did Cliff make?

• $110

• $ 90

• $30

• $10

Multiple Choice

Round these numbers in order to estimate the sum or difference.

453 + 345

• 450 + 350

• 400 + 400

• 500 + 350

Multiple Choice

Round these numbers in order to estimate the sum or difference.

54 + 65

• 50 + 60

• 60 + 60

• 50 + 70