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Fluently adding and subtracting numbers greater than 1000

Total questions: 20

Worksheet time: 34mins

Name
Class
Date
1.

Round 6,425 - 371

a)

6,054

b)

5,700

c)

6,000

2.
Mrs. Krutak used 1,820 pencils last year. This year she thinks she will use 1,932 pencils. About how many pencils is that all together?
a)
3,000.
b)
3,700.
c)
4,000.
d)
3,752.
3.

What is the estimated sum of

5,623 + 2,895?

(a)  

4.
Solve this problem using front-end estimation:
231,972 + 523,929 =
a)
300,000
b)
600,000
c)
500,000
d)
700,000
5.

Eric completed this subtraction problem.

40,932 - 17,584 = x

Then he rounded his answer to the nearest thousand.

What is Eric's answer?

a)

23,000

b)

22,000

c)

23,348

d)

23,300

6.

Estimate the difference between 5678 and 3456.

a)

5000

b)

1234

c)

3000

d)

1000

7.
Estimate the sum using rounding: 22,871 + 19,667 =
a)

40,000

b)

24,000

c)

30,000

d)

50,000

8.

Which of the following COULD be used to estimate the sum of 3,604 + 5,132? (MARK ALL THAT APPLY)

a)

4,000 + 5,000 = 9,000

b)

3,600 + 5,100 = 8,700

c)

3,600 + 5,130 = 8,730

d)

3,000 + 5,000 = 8,000

9.
Estimate to the hundreds place.
7,538 + 2,317 = 
a)
9,800
b)
9,900
c)
9,855
d)
520
10.

Round to the nearest thousand, then estimate the sum:


25,219 + 4,876

a)

29,000

b)

31,000

c)

30,000

d)

35,000

11.
Estimate the sum using rounding: 99,553 + 4,227 =
a)

104,000

b)

96,000

c)

95,000

d)

105,000

12.

Round 67,890 and 54,321 to the nearest largest place value and then add the rounded numbers.

a)

180,000

b)

130,000

c)

200,000

d)

120,000

13.

Samiyah and Ainsley are raising money for a good cause! Samiyah worked hard to raise $29,987. Ainsley also worked really hard and raised $44,908. Estimate the sum of how much Samiyah and Ainsley earned altogether.

a)

$70,000

b)

$20,000

c)

$60,000

d)

$10,000

14.

Find the estimated sum of 54 720 and 9 571.

Round the numbers to the highest place value.

a)

63 291

b)

59 000

c)

60 000

d)

70 000

15.

Estimate the sum:


2,764 + 4,851

a)

7,000

b)

6,000

c)

5,000

d)

8,000

16.

What would be a good estimated sum for 4,423 + 1,784

a)

4,000

b)

5,000

c)

6,000

d)

7,000

17.

The number of minor worker ants in two colonies are shown below.


· Colony A has 22,815 worker ants.

· Colony B has 5,144 worker ants.


Which of the following is the best estimate of the difference between the number of worker ants in these colonies?

a)

18 worker ants

b)

1,400 worker ants

c)

18,000 worker ants

d)

17,000 worker ants

18.

Estimate. What is 3,509 - 1, 793? Round to the nearest hundred.

a)

about 1,200

b)

about 1,300

c)

about 1,800

d)

about 1,700

19.

Round to the nearest ten thousand, then estimate the sum.


65,447 + 124,557

a)

80,000

b)

170,000

c)

180,000

d)

190,000

20.

Round to the nearest ten thousand, then estimate the difference:


887,167 - 342,208 =

a)

500,000

b)

554,000

c)

545,959

d)

550,000