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5 questions
Estimate to the tens place. Estimate\ to\ the\ tens\ place.\ \ Estimate to the tens place. 488 − 351 = 488\ -\ 351\ =\ 488 − 351 =
140
160
130
200
use clustering to estimate the sum
387 + 410 + 405 =
12
1,300
1,000
1,200
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