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MATHS FACTS : Addition or Subtraction of Numbers – Part 1
Remember
1. 0 added to a number gives same number
0 + 0 = 0 | 6 + 0 = 6 | 0 + 5 = 5 | 8 + 0 = 8 | 0 + 9 = 9 |
0 added to a number gives same number
2. 1 added to a number gives next number
1 + 2 = 3 | 6 + 1 = 7 | 1 + 4 = 5 | 7 + 1 = 8 | 1 + 9 = 10 |
1 added to a number gives next number
3. 0 subtracted from a number gives same number
2 – 0 = 2 | 7 – 0 = 7 | 1 – 0 = 1 | 8 – 0 = 8 | 9 – 0 = 9 |
0 subtracted from a number gives same number
4. 1 subtracted from a number gives previous number
2 – 1 = 1 | 8 – 1 = 7 | 2 – 1 = 1 | 9 – 1 = 8 | 6 – 1 = 5 |
1 subtracted from a number gives previous number
5. Number subtracted from itself gives zero (0)
1 – 1 = 0 | 8 – 8 = 0 | 2 – 2 = 0 | 9 – 9 = 0 | 6 – 6 = 0 |
Number subtracted from itself gives zero (0)
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