11-plus Maths | Rounding numbers - to the nearest ten or hundred

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Maths Quiz - Rounding Numbers (Medium) (Questions)

This 11 Plus Maths quiz explores rounding to whole numbers and decimal places, helping pupils understand accuracy and estimation in everyday maths and science.

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Fascinating Fact:

Meteorologists round temperatures to the nearest degree, so a “warm twenty” might really be 19.6 if you want to argue with the forecast.

In 11 Plus Maths, pupils learn to round numbers not only to tens or hundreds, but also to decimal places for accuracy. This skill is vital in science, measurements, and financial calculations, where precision matters.

Key Terms

Decimal Place: The position of a number after the decimal point that shows smaller parts of one whole.
Accuracy: How close a measured or calculated value is to the true value.
Significant Figure: A digit that contributes to the accuracy of a number, starting from the first non-zero digit.

Learn more about 11 Plus materials in our guide for parents.

Frequently Asked Questions (Click to see answers)

How do you round a number with decimals?

To round a decimal, look at the next digit after your chosen place value. If it’s five or more, round up; if it’s less than five, keep the number the same.

What is the difference between rounding and truncating?

Rounding adjusts the last digit based on the next value, while truncating simply cuts off digits without changing the remaining ones. Rounding is usually more accurate.

Why is rounding important in science and maths?

Rounding helps simplify results without losing meaning. Scientists, engineers, and statisticians use rounding to report data clearly while keeping it realistic and useful.

Try These Related Quizzes

What is 2,385 rounded to the nearest 10?

[ ]	2,390
[ ]	2,380
[ ]	2,400
[ ]	2,300

What is 34,562 rounded to the nearest 1,000?

[ ]	35,000
[ ]	34,000
[ ]	34,600
[ ]	35,500

What is 63 rounded to the nearest 10?

[ ]	80
[ ]	70
[ ]	60
[ ]	50

What is 11,238 rounded to the nearest 100?

[ ]	11,240
[ ]	11,230
[ ]	11,300
[ ]	11,200

What is 142,785 rounded to the nearest 10,000?

[ ]	150,000
[ ]	140,000
[ ]	142,000
[ ]	143,000

What is 486,385 rounded to the nearest 10,000?

[ ]	490,000
[ ]	496,000
[ ]	480,000
[ ]	486,000

What is 154 rounded to the nearest 100?

[ ]	250
[ ]	150
[ ]	100
[ ]	200

What is 6,004 rounded to the nearest 10?

[ ]	6,010
[ ]	6,100
[ ]	6,110
[ ]	6,000

What is 888 rounded to the nearest 100?

[ ]	990
[ ]	890
[ ]	900
[ ]	800

10.

What is 63,836 rounded to the nearest 1,000?

[ ]	63,000
[ ]	64,800
[ ]	64,000
[ ]	63,800

Maths Quiz - Rounding Numbers (Medium) (Answers)

What is 2,385 rounded to the nearest 10?

[x]	2,390
[ ]	2,380
[ ]	2,400
[ ]	2,300

Although 85 is equidistant from 90 and 80, the rule means that you round upwards

What is 34,562 rounded to the nearest 1,000?

[x]	35,000
[ ]	34,000
[ ]	34,600
[ ]	35,500

4,562 is closer to 5,000 than to 4,000, so you round upwards

What is 63 rounded to the nearest 10?

[ ]	80
[ ]	70
[x]	60
[ ]	50

63 is closer to 60 than to 70, so you round downwards

What is 11,238 rounded to the nearest 100?

[ ]	11,240
[ ]	11,230
[ ]	11,300
[x]	11,200

238 is closer to 200 than to 300, so you round downwards

What is 142,785 rounded to the nearest 10,000?

[ ]	150,000
[x]	140,000
[ ]	142,000
[ ]	143,000

42,785 is closer to 40,000 than to 50,000, so you round downwards

What is 486,385 rounded to the nearest 10,000?

[x]	490,000
[ ]	496,000
[ ]	480,000
[ ]	486,000

86,385 is closer to 90,000 than to 80,000, so you round upwards

What is 154 rounded to the nearest 100?

[ ]	250
[ ]	150
[ ]	100
[x]	200

154 is closer to 200 than to 100, so you round upwards

What is 6,004 rounded to the nearest 10?

[ ]	6,010
[ ]	6,100
[ ]	6,110
[x]	6,000

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