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Pie
3 years ago
5

How to use compatible numbers to estimate 21 times 12

Mathematics
1 answer:
Simora [160]3 years ago
5 0
Ok, First step you need to is change 21 to 22 then you estimate 12 which will give you 10 then multiply 22x10 which will give you 220. Hope this helped!
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Step-by-step explanation:

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So first simplify the first square root:

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Step-by-step explanation:

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I think this is right

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