Subtraction Wednesday
Today we will be doing some more work on 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:
T ry and count backwards from 30 .
Watch these videos to help you:
VIDEO
VIDEO
Main Task:
Write down your calculations in your jotter and then answer them.
Primary 1
1 – 1 =
4 – 2 =
5 – 3 =
7 – 4 =
9 – 3 =
19 – 0 =
10 – 3 =
11 – 4 =
Extra Challenge:
Can you answer these tricky missing number calculations?
Put the number in your pocket and count back using your fingers until you reach the answer. How many fingers did you need?
Remember they are take away calculations:
· 8 – ? = 7
· 7 – ? = 3
· 12 – ? = 10
· 10 – ? = 8
· 5 – ? = 2
· 14 – ? = 11
Game to Support Learning:
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