Estimating Products of 2-digit Numbers

Find a pair of numbers that multiply as close as possible to a target value. Discover compatible number strategies to estimate products.
Putting It All Together
[i]Answer these open ended questions on your own or with others to form deeper math connections. [/i]
How did you pick which numbers to choose?
When would someone want to round numbers in estimating multiplication? When would they not need to round?
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Information: Estimating Products of 2-digit Numbers