Question

7.32*3.2-2.4 74*0.72+4.3 0.8*（12.5+1.25) 5.2*10.1简便计算

Answer 1

7.32*3.2-2.4

=23.424-2.4

=21.024

74*0.72+4.3

=53.28+4.3

=57.28

0.8*（12.5+1.25)

=0.8*12.5+0.8*1.25

=11-1

=10

5.2*10.1

=5.2*10+5.2*0.1

=52+0.52

=52.52