# Missing Operations Exercise

## Each box represents a missing operation (add, subtract, multiply or divide). What are they?

##### Menu  BIDMASLevel 1Level 2Level 3Level 4Level 5  Help    More

This is level 1: numbers up to 10. You will be awarded a trophy if you get at least 9 correct and you do this activity online.

Click the squares between the numbers to select the operations.

Write one of the symbols $$+ \, - \, \times \, \div$$ in each of the boxes to make the statements correct.

 1 8+−×÷8+−×÷7 = 9 ☐ ☐ ✓ ✗ 2 8+−×÷3+−×÷2 = 12 ☐ ☐ ✓ ✗ 3 3+−×÷3+−×÷2 = 3 ☐ ☐ ✓ ✗ 4 6+−×÷1+−×÷6 = 12 ☐ ☐ ✓ ✗ 5 3+−×÷1+−×÷6 = 9 ☐ ☐ ✓ ✗ 6 6+−×÷3+−×÷9 = 9 ☐ ☐ ✓ ✗ 7 1+−×÷4+−×÷4 = 1 ☐ ☐ ✓ ✗ 8 8+−×÷4+−×÷9 = 288 ☐ ☐ ✓ ✗ 9 1+−×÷8+−×÷5 = 41 ☐ ☐ ✓ ✗ 10 9+−×÷7+−×÷4 = -19 ☐ ☐ ✓ ✗ 11 8+−×÷6+−×÷7 = 41 ☐ ☐ ✓ ✗ 12 6+−×÷5+−×÷3 = 90 ☐ ☐ ✓ ✗
Check

This is Missing Operations Exercise level 1. You can also try:
Level 2 Level 3 Level 4 Level 5

## 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.

## More Activities:

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?

Comment recorded on the 1 February 'Starter of the Day' page by Terry Shaw, Beaulieu Convent School:

"Really good site. Lots of good ideas for starters. Use it most of the time in KS3."

Comment recorded on the 18 September 'Starter of the Day' page by Mrs. Peacock, Downe House School and Kennet School:

"My year 8's absolutely loved the "Separated Twins" starter. I set it as an optional piece of work for my year 11's over a weekend and one girl came up with 3 independant solutions."

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#### Polygon Pieces

Arrange the nine pieces of the puzzle on the grid to make the given polygon. Level one is for those learning the names of shapes while other levels are for those who like a challenge!

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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

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Scan the QR code below to visit the online version of this activity.

https://www.Transum.org/go/?Num=813

## Description of Levels

Close

If you are new to this topic I suggest you try the BIDMAS exercise first in order to become familiar with the 'order of operations'.

Level 1 - Numbers up to 10

Level 2 - Numbers 10 to 19

Level 3 - Brackets included

Level 4 - Decimals included

Level 5 - Advanced (including fractions)

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.

You can print out the levels of this exercise individually or download a pdf version of all five levels in structured worksheet format.

You need to know about the order of operations in order to complete this exercise. This is how I remember the order:

BIDMAS is an acronym reminding pupils of the order of operation used when evaluating expressions involving a number of different operations. The letters of BIDMAS stand for:

• Brackets,
• Indicies,
• Division,
• Multiplication,
• Subtraction.

When only addition and subtraction (or only multiplication and division) are left in an expression you should work them out in the order you find them, starting from the left and working towards the right. The blue image of the letters above has been designed to show that multiplication and division have the same importance as the letter M is in the same position as the letter D. The same can be said for the letters A and S.

For example, to evaluate the expression 32 + 5 x 7 - (4 - 3)

Work out the brackets first which gives 32 + 5 x 7 - 1

Then the indices 9 + 5 x 7 - 1

Then the multiplication 9 + 35 - 1

Then the addition and subtraction in the order they are given