Question

Estimate the difference. 38.7 - 21.2

Answer 1

17.5

Step-by-step explanation:

38.7

21.2

17.5=

subtract 38.7-21.2 which equalals 17.5

Answer 2

18

Step-by-step explanation:

This is the answer because:

1) First, round the numbers you are subtracting to nearest unit digit

38.7 = 39

21.2 = 21

2) Now subtract 39 and 21 which equals 18

39 - 21 = 18

Hope this helps! :D