Subtraction Wednesday

Today we will be learning all about subtraction.

• Remember when we subtract the number always gets smaller; we count backwards.

• Minus, take-away, less than and subtract all mean the same thing.

Warm Up: 

• Go on a number hunt around your house. Can you identify the number before the number you find? Remember to find the number before, you must subtract 1.

• Watch this subtraction video:

Main Task:

• Write down your sums in your jotter and then answer them.

• Primary 1 sums are in red and Primary 2 sums are in blue.

Primary 1	Primary 2
3 – 1 =	13 – 1 =
6 – 2 =	16 – 2 =
10 – 3 =	20 – 3 =
5 – 4 =	15 – 4 =
6 – 6 =	16 – 6 =
9 – 0 =	19 – 0 =
7 – 3 =	17 – 3 =
10 – 4 =	20 – 4 =

Extra Challenge: 

• Can you answer these missing number sums. Remember they are take away sums:

·         7 – ? = 7	·         9 – ? = 6	·         13 – ? = 10
·         10 – ? = 8	·         8 – ? = 0	·         17 – ? = 13

Game to Support Learning: 

• Play the game below to practise your addition and subtraction.

• Click on the + or the – train.

•  https://www.topmarks.co.uk/maths-games/mental-maths-train