Download presentation

Presentation is loading. Please wait.

Published byEthan Stokes Modified over 3 years ago

1
**Inverse You will learn: That addition is the inverse of subtraction.**

To check your answers by using the inverse operation. To solve simple ‘missing number’ problems by using the inverse method. 1

2
**Can you turn these addition number sentences into subtractions?**

6+2=8 9+7=16 23+41=64 39+22=61 8-2=6 16-7=9 64-41=23 61-22=39 Can you make a different subtraction?

3
**You can use this method to check your answers.**

9+4= 13 Check your answer by turning it into a subtraction: 13-4= 9 13-9= 4 or

4
**What would you do if an equation had a missing number?**

+7=15

5
**It is not a straight forward task, so use the numbers you have been given!**

8 +7=15 15-7= 8 It is an addition, so start at the end and turn it into a subtraction…

6
**It is not a straight forward task, so use the numbers you have been given!**

25 -9=16 16+9= 25 It is a subtraction, so start at the end and turn it into an addition…

7
**In your books, try to solve these problems**

In your books, try to solve these problems. Record the inverse calculation. -8=14 +13=29 -19=13 +20=41 -27=56 +17=31 -30=65 +14=35

8
**Plenary Addition and subtraction are the inverse of each other.**

Use this fact to help you check your answers when performing addition and subtraction calculations. If the first number of a problem is missing, try using the inverse method.

Similar presentations

Presentation is loading. Please wait....

OK

1..

1..

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on fire extinguisher types colors Ppt on rc phase shift oscillator connections Ppt on child labour free download in hindi Ppt on india political history Responsibility for kids ppt on batteries Ppt on consumer protection act 1986 Ppt on addition for class 3 Ppt on dc circuit breaker Ppt on satellite orbital speed Download ppt on area of parallelogram