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Worksheets

Approximation

Total questions: 20

Worksheet time: 3hrs 20mins

Name
Class
Date
1.

Round off 963 112 to the nearest ten thousand.

a)

960 112

b)

960 012

c)

960 002

d)

960 000

2.

Round off 45 909 to the nearest thousand.

a)

45 000

b)

46 000

c)

46 900

d)

47 000

3.

48 003 when rounded off to the nearest hundreds will become

a)

48 030

b)

48 300

c)

48 000

d)

48 100

4.

Estimate the answer to: (hundreds)


1965 - 370

a)

1600

b)

1500

c)

1595

d)

2400

5.
Eric bought 231 cows and Lisa bought 392 cows. Estimate how many cows they bought in total.
a)
600 cows
b)
1,000 cows
c)
200 cows
d)
100 cows
6.
If I had 10,023 doughnuts and I eat 8,195 roughly how many do I have left to eat?
a)
1000
b)
2000
c)
3000
d)
4000
7.

Estimate the answer to:


906 + 397

a)

1300

b)

1200

c)

1310

d)

1303

8.

Estimate the answer to:


578 + 720

a)

1300

b)

1200

c)

1290

d)

1298

9.

Estimate the answer to:


1965 - 370

a)

1600

b)

1500

c)

1595

d)

2400

10.
Amy had 13 jelly beans in her left hand and 28 in her right hand. Estimate how many jelly beans Amy had in all.
a)
45
b)
40
c)
50
d)
30
11.
Bobby has 44 toy cars and trucks. He also has 62 ninja turtles and soldiers. Estimate how many toy cars, trucks, ninja turtles and soldiers Bobby has.
a)
86
b)
10
c)
100
12.

Round off 456,678 to the nearest thousand.

a)

466,000

b)

457,000

c)

456,000

d)

465,000

13.

The symbol ≈ means __________.

a)

approximately or about equal

b)

equal

c)

greater than

d)

smaller than

14.

To estimate means to find something close to the correct answer.

a)

True

b)

False

15.

Round-off 99 to the nearest tens

a)

81

b)

100

c)

75

d)

90

16.

Round-off 724 to the nearest hundreds

a)

800

b)

35

c)

756

d)

700

17.

Round-off 981 to the nearest thousands :

a)

1000

b)

0

c)

900

d)

9000

18.

Find the estimated sum of 38 + 25 ?

a)

30+ 40= 70

b)

40+40=80

c)

30+ 30=60

d)

40+ 30= 70

19.

Estimate the sum of 500 + 650

a)

600+ 600=1200

b)

500 + 600= 1100

c)

500+ 700= 1200

d)

550 + 650= 1200

20.

Estimate the sum of 576 + 786

a)

600 + 800 = 1400

b)

550 + 750 = 1300

c)

600 + 500 = 1100

d)

600 + 700 = 1300