Rounding Off Numbers: Master the Art of Estimation in Mathematics

Question 1

When rounding numbers to the nearest 1,000, which digit do we look at?

Accepted Answer

The thousands digit

Answer

The ones digit

Answer

The tens digit

Answer

The hundreds digit

Question 2

A ribbon is measured to be 5.4 cm long. When we round this measurement to the nearest whole number, what is the range of possible actual lengths the ribbon could be?

Accepted Answer

4 cm to 6 cm

Answer

5 cm to 7 cm

Answer

3 cm to 7 cm

Answer

4 cm to 5 cm

Question 3

A shop sells apples for 25 pence each. If you buy 9 apples, how much will it cost rounded to the nearest 10 pence?

Accepted Answer

£2.10

Answer

£1.90

Answer

£2.00

Answer

£2.20

Question 4

Which of these numbers is the largest when rounded to the nearest 100?

Accepted Answer

789

Answer

456

Answer

543

Answer

678

Question 5

A farmer has 125 sheep. After selling some sheep, he has 86 left. How many sheep did he sell, rounded to the nearest 10?

Accepted Answer

50

Answer

30

Answer

40

Answer

60

Question 6

When rounding the numbers 678 and 702 to the nearest 100, what is the difference between the rounded numbers?

Accepted Answer

0

Answer

24

Answer

100

Answer

1,000

Question 7

A farmer has 478 sheep. He wants to round the number of sheep to the nearest 100 to estimate how many sheep he has. How many sheep does he have when rounded?

Accepted Answer

500

Question 8

What is the result of rounding 12,543 to the nearest 10?

Accepted Answer

12,540

Answer

12,550

Question 9

Which number would be rounded to the same number when rounded to the nearest 10 or 100?

Accepted Answer

55

Question 10

What is 78,245 rounded to the nearest 10,000?

Accepted Answer

80,000

Answer

70,000

Answer

90,000

Answer

100,000

Question 11

A school estimates 458 students attend. To the nearest 100, how many students attend?

Accepted Answer

500

Answer

400

Answer

600

Answer

700

Question 12

The population of a town is about 25,892. Estimate the population to the nearest 1,000.

Accepted Answer

26,000

Answer

25,000

Answer

27,000

Answer

28,000

Question 13

In a sale, all prices are rounded to the nearest £10. If a pair of shoes costs £57, what will they cost after rounding?

Accepted Answer

£60

Answer

£50

Answer

£70

Answer

£80

Question 14

Which of the following numbers, when rounded to the nearest thousand, becomes 2,000?

Accepted Answer

1,999

Answer

1,989

Answer

2,001

Answer

2,010

Question 15

Round the number 12,345 to the closest ten.

Accepted Answer

12,350

Answer

12,340

Answer

12,360

Answer

12,370

Question 16

Round the number 7,891 to the nearest thousand.

Accepted Answer

8,000

Answer

7,000

Answer

9,000

Answer

10,000

Question 17

Which of the following numbers, when rounded to the nearest hundred, becomes 300?

Accepted Answer

299

Answer

292

Answer

301

Answer

308

Question 18

Round the number 15,678 to the closest ten.

Accepted Answer

15,680

Answer

15,670

Answer

15,690

Answer

15,700

Question 19

We want to round 7,892 to the nearest thousand. Which of these is the rounded number?

Accepted Answer

8,000

Answer

7,000

Answer

9,000

Answer

10,000

Question 20

A car travels 789 kilometres. Rounded to the nearest hundred kilometres, what is the rounded distance?

Accepted Answer

800 kilometres

Answer

700 kilometres

Answer

900 kilometres

Answer

1000 kilometres

Question 21

Which number is the same as 5,678 rounded to the nearest 10?

Accepted Answer

5,680

Answer

5,670

Answer

5,690

Answer

5,700

Question 22

Which number is 3,456 rounded to the nearest 100?

Accepted Answer

3,500

Answer

3,400

Answer

4,300

Answer

4,500

Question 23

When rounding 2,789 to the nearest 10, what is the rounded number?

Accepted Answer

2,800

Answer

2,780

Answer

2,790

Answer

2,810

Question 24

What is 5,432 rounded to the nearest thousand?

Accepted Answer

5,000

Answer

6,000

Question 25

A store has 453 apples. If they need to estimate the number of apples to the nearest hundred, how many apples do they have approximately?

Accepted Answer

450

Answer

400

Question 26

Which of the following numbers is rounded to the nearest ten and is greater than 5,234?

Accepted Answer

5,260

Answer

5,240

Question 27

A farmer has 2,745 sheep. To estimate the number of sheep to the nearest thousand, he should round the number to:

Accepted Answer

3,000

Answer

2,000

Question 28

When the number 2589 is rounded to the nearest 1000, what is the rounded number?

Accepted Answer

3000

Answer

2000

Answer

2500

Answer

3500

Question 29

Which number, when rounded to the nearest 10, has the same value as 23?

Accepted Answer

20

Answer

19

Answer

30

Answer

33

Question 30

Which of the following numbers is rounded to 2,000 when rounded to the nearest thousand?

Accepted Answer

2,050

Answer

1,950

Answer

2,100

Question 31

Round the number 3,456 to the nearest ten.

Accepted Answer

3,450

Answer

3,460

Answer

3,470

Question 32

Which of the following is the correct rounding of 549 to the nearest hundred?

Accepted Answer

500

Answer

400

Answer

600

Question 33

Round the number 2,357 to the nearest thousand.

Accepted Answer

3,000

Answer

2,000

Answer

4,000

Question 34

A company makes 789 products in a week. To the nearest hundred, how many products does the company make?

Accepted Answer

800

Answer

700

Answer

900

Question 35

What is 20 rounded to the nearest 10?

Accepted Answer

20

Answer

15

Answer

19

Answer

24

Question 36

Round the number 1,000 to the nearest 1,000.

Accepted Answer

1,000

Answer

500

Answer

999

Answer

1,001

Question 37

Round the number 45,678 to the nearest 1,000.

Accepted Answer

46,000

Answer

45,000

Answer

47,000

Answer

48,000

Question 38

Round the number 12345 to the nearest 100, then round the result to the nearest 1000.

Accepted Answer

12000

Answer

12300

Answer

13000

Answer

11000

Question 39

The population of a town is estimated to be 15,432. Round this number to the nearest 1000.

Accepted Answer

15000

Answer

16000

Answer

14000

Answer

17000

Question 40

Round the number 9,876 to the nearest thousand.

Accepted Answer

10,000

Answer

11,000

Answer

12,000

Answer

9,000