Biut
Because addition properties allow you to add them in the first place and without them, you couldn't add!
help. 90+80+10
If you simply add numbers the answer is the sum of those numbers.
221
It is easier to simply add two one-digit numbers than to mess about with estimation!
30
It can help you because it organizes the places the numbers belong in and that is how it helps you.
You can add 289 and 7 together without estimating. you can add 2, 8, 9 and 7 together without estimating. If you have to, 290 and 7 = 297.
Because that is what addition means. If you want to add whole numbers, the process that you use is addition.
Biut
Because that is what addition means. If you want to add whole numbers, the process that you use is addition.
Because that is what addition means. If you want to add whole numbers, the process that you use is addition.
u need to answer the question then check it by estimating
you where no help at all
Because addition properties allow you to add them in the first place and without them, you couldn't add!
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