Rounding
Estimate
Unknown
Word Problem
Add or Subtract
100

35 rounded to the nearest 10

What is 40?

100

Estimate by rounding to the nearest 10

64 - 33 = ?

What is 30?

100

156 - ? = 41

What is 115?

100

A restaurant has 3 barrels of rice. Each barrel weighs 12 pounds. How many pounds rice does the restaurant have in all?

What is 36?

100

437 + 89 = ?

What is 526?

200

523 rounded to the nearest 100

What is 500?

200

Estimate by rounding to the nearest 100

632 - 454 = ?

What is 100?

200

? + 334 = 520

What is 186?

200

Sally has 120 inches of yarn. She used 75 inches to sow a scarf. How many inches of yarn does she now have?

What is 45?

200

712 - 346 = ?

What is 366?

300

467 rounded to the nearest 10

What is 470?

300

Estimate by rounding to the nearest 10

388 - 154 = ?

What is 240?

300

18 divided by ? = 9

What is 2?

300

A baker makes 5 boxes of cookies. Each box has 8 cookies. He gives 6 cookies away. How many cookies does he have left?

What is 54?

300

Find the sum of 599 and 326.

What is 925?

400

1,305 rounded to the nearest 100

What is 1,300?

400
Estimate by rounding to the nearest 100


2,432 - 401 = ?

What is 2,000?

400

? divided by 3 = 9

What is 27?

400

Roger has 156 baseball cards in his collection. He gives 24 to his sister and then collected 12 more. How many cards does Roger have now?

What is 144?

400

Find the difference between 303 and 184.

What is 119?

500

796 rounded to the nearest 10

What is 800?

500

Estimate by rounding to the nearest 100

1,765 - 853 = ?

What is 900?

500

12 x S = 36

What is 3?

500

Jane has 336 magazines for recycling. She recycled 104 magazines on Monday. She recycled 132 on Tuesday. How many magazines does she have left to recycle?

What is 100?

500

800 - 638 = ?

What is 162?