Free Printable Estimating Sums & Differences

1.

a)

500 - 200 = 300

b)

600 - 200 = 300

c)

600 - 200 = 400

d)

500 - 200 = 200

2.

There are 324 kids at The Green School and 399 kids at The Blue School. Estimate how many kids there are in total to the nearest hundred.

a)

640

b)

700

c)

345

d)

900

3.

Round to the nearest hundred, then estimate the sum:

123 + 456

a)

580

b)

600

c)

650

d)

500

4.

Tracy ordered 325 pet toys and 165 bags of dog food for her new pet store. Which is the best estimate of the total number of items Tracy ordered?

a)

400

b)

500

c)

600

d)

700

5.

a)

400 + 200 = 600

b)

500 + 200 = 700

c)

500 - 200 = 400

d)

500 - 200 = 300

6.

Estimate the sum of 37+99 by rounding to the nearest tens

a)

120

b)

150

c)

140

d)

136

7.

To celebrate Halloween a family is counting pumpkin seeds. Max and his dad counted 243; Brita and her mom counted 333. To the nearest ten, about how many more seeds did Brita and her mom count?

a)

85

b)

90

c)

100

d)

500

8.

$Estimate\ to\ the\ tens\ place.\ \$ $488\ -\ 351\ =\$

a)

140

b)

160

c)

130

d)

200

9.

a)

400 + 200 = 600

b)

500 + 200 = 600

c)

500 + 200 = 700

d)

400 + 200 = 700

10.

237 fifth graders and 346 fourth graders went on a field trip. Estimate how many more fourth graders were on a field trip than fifth graders.

a)

200 more

b)

109 more

c)

100 more

d)

110 more

11.

Estimate the sum of 42+59 by rounding to the nearest tens

a)

110

b)

100

c)

111

d)

90

12.

Jill took 32 minutes to complete math homework and 16 minutes to complete reading. About how many minutes did Jill use for homework?

a)

48 minutes

b)

50 minutes

c)

55 minutes

d)

40 minutes

13.

To the nearest ten, what is the estimated difference of

426 - 210?

(a)

14.

Mrs. Kelly ordered 325 pet toys and 165 bags of dog food for her new pet store. Which is the best estimate of the total number of items Mrs. Kelly ordered?

a)

400

b)

500

c)

600

d)

700

15.

Round to the nearest hundred, then estimate the difference:

642 − 137

a)

600

b)

780

c)

500

d)

510

16.

There was 926 people at basketball tournament. 607 people left before noon. Which is the best estimate of the number of people who stayed?

a)

150

b)

250

c)

300

d)

500

17.

$655\ +111\ =\$ $Estimate:\ Round\ to\ the\ nearest\ ten\ and\ hundred.\$

a)

800 and 700

b)

760 and 866

c)

750 and 700

d)

770 and 800

18.

Mrs. Haskins has $459 in her savings and $101 in a piggy bank in her closet. To the nearest hundred dollars, approximately how much money does she have altogether?

a)

600

b)

605

c)

500

d)

560

19.

What is the estimated sum of

428 + 946?

(a)

20.

Alexander has 59 toys in his room. Tiffany has 193 toys. About how many more toys does Tiffany have than Alexander? (round to the nearest ten)

a)

100

b)

250

c)

130

d)

300

Estimating Sums & Differences

Total questions: 20

Worksheet time: 3600secs

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