Topic Content:
- Rules for Addition & Subtraction
You can add and subtract direct numbers without drawing the number line using the rules below:
The rules for addition and subtraction are:
Replace the same signs that appear together with a positive sign:
e.g. +5 + ( + 3 ) = 5 + 3 = 8
Same sign gives +
e.g. + 7 – ( – 4 ) = 7 + 4 = 11
Same sign gives +
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