Welcome to the second of our Easy quizzes on Rounding Numbers. This is all about making approximations which make your estimated answers much closer to the real answer.

Here’s an example:

If you want to know what 48 x 12 is then you might round the numbers to 50 x 10. This makes your estimated answer 500. The real answer should be a similar amount. In fact, 48 x 12 = 576.

To round numbers just ask yourself which ten, hundred or thousand they are nearest to. But don’t forget the rule: 5s, 50s and 500s are always rounded UP not DOWN.

Okay then, are you ready? Let’s begin the quiz. See if you can get all ten questions right.

1.

What is 47 rounded to the nearest 10?

40

45

50

10

7 is closer to 10 than 0, so you round upwards

2.

What is 18,583 rounded to the nearest 1,000?

18,000

18,600

19,000

18,500

583 is closer to 1,000 than 0, so you round upwards

3.

What is 26,500 rounded to the nearest 1,000?

26,000

27,000

26,500

26,600

Although 500 is equidistant from 0 and 1,000, the rule means that you round upwards

4.

What is 28,486 rounded to the nearest 10?

28,500

28,480

28,400

28,490

6 is closer to 10 than to 0, so you round upwards

5.

What is 3,498 rounded to the nearest 1,000?

3,000

3,500

4,000

3,400

498 is closer to 0 than to 1,000, so you round downwards

6.

What is 256 rounded to the nearest 100?

200

300

250

260

56 is closer to 100 than to 0, so you round upwards

7.

What is 10,082 rounded to the nearest 10?

10,090

10,100

10,080

10,000

2 is closer to 0 than to 10, so you round downwards

8.

What is 11,345 rounded to the nearest 10?

11,300

11,340

11,400

11,350

Although 5 is equidistant from 0 and 10, the rule means that you round upwards

9.

What is 13,751 rounded to the nearest 100?

13,800

13,750

13,700

14,000

51 is closer to 100 than to 0, so you round upwards

10.

What is 18,425 rounded to the nearest 10?

18,500

18,420

18,400

18,430

Although 5 is equidistant from 0 and 10, the rule means that you round upwards