Question

简便方法计算 0.038×5×0.6 10.5×8.3+10.5×1.

简便方法计算 0.038×5×0.6 10.5×8.3+10.5×1.7 102×0.5 3.29×99+3.29 0.72×98

Answer 1

解：0.038x5x0.6 10.5x8.3+10.5x1.7 102x0.5 3.29×99+3.29 0.72×98
=0.038x(5x0.6) =10.5x(8.3+1.7) =51 =3.29x(99+1) =0.72x(100-2)
=0.038x3 =10.5x10 =3.29x100 =72-1.44
=0.114 =105 =329 =70.56
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Answer 2

0.038×5×0.6
=0.038×(5×0.6)
=0.038×3
=0.114
10.5×8.3+10.5×1.7
=10.5×(8.3+1.7)
=10.5×10
=105
102×0.5
=(100+2)×0.5
=100×0.5+2×0.5
=50+1
=51
3.29×99+3.29
=3.29×(99+1)
=3.29×100
=329
0.72×98

=0.72×(100-2)
=0.72×100-0.72×2
=72-1.44
=70.56

Answer 3

解：0.038*3=0.114
10.5*（8.3+1.7）=10.5*10=105
102/2=51
3.29*（99+1）=329
0.72*（100-2）=72-1.44=70.56

Answer 4

0.038×5×0.6
=0.038x3
=0.114

10.5×8.3+10.5×1.7
=10.5x(8.3+1.7)
=10.5x9
=94.5

102×0.5
=51x2x0.5
=51x1
=51

3.29×99+3.29

=3.29x(99+1)
=3.29x100
=329

Answer 5

0.038x5x0.6等于0.038x5x0.6的积等于0.038x3等于0.11x4。