Question

Estimate the difference to the nearest tens and also find the actual difference: 1)45-21,2)66-43,3)52-19​

Answer 1

Answer:

45:50, 21:20 (24) ;66:70, 43:40(23) ;52:50;19:20(33)

Step-by-step explanation:

The bracket ones are their difference

Answer 2

Answer:

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