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lutik1710 [3]
4 years ago
12

Addition properties and subraction rules

Mathematics
1 answer:
mash [69]4 years ago
3 0
You don't have to add in a certain order it's any way but when your adding domt forget to cary if you need to. For subtraction you have to the way it gives you and you have to borrow when you can subtract a number that won't go into. For an example 90-12
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