# Decimal Plus

## Practise mental and written methods for adding and subtracting decimal numbers.

##### Level 1Level 2Level 3DescriptionHelpMore Decimals

This is level 2; Adding and subtracting a wide range of decimal numbers. You can earn a trophy if you get at least 9 correct and you do this activity online.

 8.79 + 62.2 47.5 − 9.11 6.83 + 34.2 75.3 − 3.61 48.2 + 9.2 7.39 − 4.93 36.9 + 1.92 88.6 − 60.6 82.4 + 4.99 21 − 8.43 22.4 + 20.6 55.7 − 9.16
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This is Decimal Plus level 2. You can also try:
Level 1 Level 3

There is also an exercise on multiplication and division of decimals called Decimal Times.

## 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.

## Transum.org

This web site contains over a thousand free mathematical activities for teachers and pupils. Click here to go to the main page which links to all of the resources available.

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#### Nine Digits

Arrange the given digits one to nine to make three numbers such that two of them add up to the third. This is a great puzzle for practicing standard pen and paper methods of three digit number addition and subtraction.

## Answers

There are answers to this exercise but they are available in this space to teachers, tutors and parents who have logged in to their Transum subscription on this computer.

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## Go Maths

Learning and understanding Mathematics, at every level, requires learner engagement. Mathematics is not a spectator sport. Sometimes traditional teaching fails to actively involve students. One way to address the problem is through the use of interactive activities and this web site provides many of those. The Go Maths page is an alphabetical list of free activities designed for students in Secondary/High school.

## Maths Map

Are you looking for something specific? An exercise to supplement the topic you are studying at school at the moment perhaps. Navigate using our Maths Map to find exercises, puzzles and Maths lesson starters grouped by topic.

## Teachers

If you found this activity useful don't forget to record it in your scheme of work or learning management system. The short URL, ready to be copied and pasted, is as follows:

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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© Transum Mathematics :: This activity can be found online at:
www.transum.org/Maths/Activity/Decimals/Add.asp?Level=2

## Description of Levels

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Level 1 - Adding and subtracting numbers less than ten with one decimal place

Level 2 - Adding and subtracting a wide range of decimal numbers

Level 3 - Real life problems involving the addition and subtraction of decimal numbers

There is also an exercise on multiplication and division of decimals called Decimal Times.

## Adding and Subtracting Decimals

This video will teach you how to perform the basic operations with decimals.

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