**"Operations"**

## Grades 6 to 8 Beautiful Numbers

*By toni On 5 October, 2017 · Leave a Comment*

Work out the different numbers to replace the question marks.

What do you notice about the patterns in these calculations?

Can you explain why this pattern occurs?

## Grades 4 to 6 Number Sentences

*By toni On 18 July, 2017 · Leave a Comment*

Put the missing symbol into the box to make these number sentences correct.

Use the symbols +, −, ×, ÷ and =.

17 ☐ 21 = 38

17 ☐ 3 = 51

57 ☐ 29 = 28

9 ☐ 63 ÷ 7

You can make most of the number sentences below correct by putting in […]

## Grades 9-11 Exponents

*By Ben Walker On 24 November, 2016 · Leave a Comment*

Working either in small groups or as a whole-class activity, you will be given two sets of small cards. On one set expressions, such as 68 ÷ 64, are given. In the other set single values, such as 64, are given. Work out the value of the cards using the laws of exponents or by […]

## Grades 9 to 12 Building Functions

*By toni On 19 November, 2016 · Leave a Comment*

Amy and her friends have built some functions. If they all input the number 1 into their functions Amy’s output would be 6, Busi’s 1, Chris’s 6½ and Dudu’s 3½.

Build some of your own functions using the operations [subtract 2], [multiply by 3], [divide by 2] and [add […]

## Grades 7 to 10 Target Game

*By toni On 18 November, 2016 · Leave a Comment*

Combine the two given numbers using one of the operations addition +, subtraction -, or multiplication x, and each number once and only once, to get as close to the target number as possible.

Target -10 with (-3) and (-5); Target -60 with (-6) and (+9); Target + 45 with (-5) and […]

## Grades 3 to 10 I’m Eight

*By toni On 27 July, 2016 · Leave a Comment*

When I went into a classroom earlier this week a child rushed up to tell me she was 8 that day!

Well, Happy Birthday to everyone who has a birthday today!

Whatever age you are, can you find a variety of questions that give your age as the answer? This […]

Using the numbers 1, 2, 3, 4 and 5 once and only once and the symbols × and ÷ once and only once, what is the smallest whole number you can make?

Now suppose you have to use the symbol + once and the symbol ÷ twice what is the smallest fraction […]

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