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Using compatible numbers to estimate 329+64
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Using compatible numbers to estimate 329+64

User Rpkamp
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330+60. You see how the larger number rounded up because the last digit is a 9 so 5 & up round up. 64 you round down because the last digit is under 5 so round down. :)
User Spook
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User Sorav Garg
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Use compatible numbers to estimate 329 + 64=
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