Transum Software

Rounding to the nearest whole number

Practise your approximation and rounding skills with this online, self-marking exercise.

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This is level 1; Rounding numbers to the nearest whole number. You can earn a trophy if you get at least 9 correct.

91.4

Correct Wrong

28.4

Correct Wrong

19.8

Correct Wrong

34.7

Correct Wrong

81.5

Correct Wrong

159.5

Correct Wrong

905099

Correct Wrong

21.1

Correct Wrong

39.84

Correct Wrong

110.49

Correct Wrong

15.0999

Correct Wrong

8.4799

Correct Wrong

Check

This is 'Rounding to the nearest whole number'. You can also try rounding to:
1 decimal place 2 decimal places 1 sig fig 2 sig figs 3 sig figs Ten, hundred etc

Instructions

Try your best to answer the questions above. Type your answers into the boxes provided leaving no spaces. As you work through the exercise regularly click the "check" button. If you have any wrong answers, do your best to do corrections but if there is anything you don't understand, please ask your teacher for help.

When you have got all of the questions correct you may want to print out this page and paste it into your exercise book. If you keep your work in an ePortfolio you could take a screen shot of your answers and paste that into your Maths file.

Why am I learning this?

Mathematicians are not the people who find Maths easy; they are the people who enjoy how mystifying, puzzling and hard it is. Are you a mathematician?

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"3 NQTs in the department, I'm new subject leader in this new academy - Starters R Great!! Lovely resource for stimulating learning and getting eveyone off to a good start. Thank you!!"

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When planning to use technology in your lesson always have a plan B!

QI,

Monday, February 28, 2022

"Who was the first person to put two feet on the top of Everest?

It was Radhanath Sikdar who had a special aptitude for trigonometry. Back in the 1850s he used a theodolite located 150 miles away to measure the height as being exactly 29,000 feet. He thought people would not be impressed with the accuracy of his measurement as it was a multiple of a thousand so he added two feet to make the measurement 29,002 feet. Thus he became the first person to put two feet on the top of Everest!
Quite Interesting!"

Lauri Johnson, Eastern Hancock High School

Monday, August 14, 2023

"Some of the questions for 3 sigfigs require the student to write the answer so that it only has 2 sigfigs. For example, 87954 to 3 sigfigs is 8.80 x 10^4, but the practice wants the answer to be 88000. But that answer only has 2 sigfigs. Only a few questions come up like this, but I wanted to pass is along. Other than that, this is a GREAT practice for my chem students. Thanks for making this available.

[Transum: Thanks very much Lauri, that's an excellent point. I have added information to the Help tab to explain the situation with examples of how to avoid ambiguity.]"

Do you have any comments? It is always useful to receive feedback and helps make this free resource even more useful for those learning Mathematics anywhere in the world. Click here to enter your comments.

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Description of Levels

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Level 1 - Rounding numbers to the nearest whole number

Level 2 - Rounding numbers to one decimal place

Level 3 - Rounding numbers to two decimal places

Level 4 - Rounding numbers to one significant figure

Level 5 - Rounding numbers to two significant figures

Level 6 - Rounding numbers to three significant figures

Level 7 - Rounding numbers to the nearest ten, hundred etc

More on this topic including lesson Starters, visual aids, investigations and self-marking exercises.

Answers to this exercise are available lower down this page when you are logged in to your Transum account. If you don’t yet have a Transum subscription one can be very quickly set up if you are a teacher, tutor or parent.

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Curriculum Reference

See the National Curriculum page for links to related online activities and resources.

Example

Don't wait until you have finished the exercise before you click on the 'Check' button. Click it often as you work through the questions to see if you are answering them correctly. You can double-click the 'Check' button to make it float at the bottom of your screen.

Answers to this exercise are available lower down this page when you are logged in to your Transum account. If you don’t yet have a Transum subscription one can be very quickly set up if you are a teacher, tutor or parent.

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Ways to denote significant figures in an integer with trailing zeros

Adapted from a longer piece in a Wikipedia article

The significance of trailing zeros in a number not containing a decimal point can be ambiguous. For example, it may not always be clear if the number 1300 is precise to the nearest unit (just happens coincidentally to be an exact multiple of a hundred) or if it is only shown to the nearest hundreds due to rounding or uncertainty. The following widely recognised options are available for indicating the significance of number with trailing zeros:

For the purpose of answering the questions in the higher level exercises these methods are not necessary as your typed answers appear on the same page as the instructions stating the number of significant figures required.

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