(要求:要计算过程.)

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(要求:要计算过程.)(要求:要计算过程.) (要求:要计算过程.)15×3/8+9×37.5%=15×3/8+9×3/8=(15+9)×3/8=24×3/8=914÷7/2÷12.5%=1

(要求:要计算过程.)
(要求:要计算过程.)
 

(要求:要计算过程.)
15×3/8+9×37.5%
=15×3/8+9×3/8
=(15+9)×3/8
=24×3/8
=9
14÷7/2÷12.5%
=14×2/7×0.125
=4×0.125
=0.5
3/5×25%+125%
=0.15+1.25
=1.4

=9
=32
=1.4

2)
15×3/8+9×37.5%
=15×3/8+9×3/8
=3/8×(15+9)
=9
3)14÷7/2÷12.5%
=14÷(7/2×1/8)
=14÷7/16
=14×16/7
=32
4)3/5×25%+125%
=3/5×1/4+5/4
=3/5×1/4+5×1/4
=1/4×(3/5+5)
=1/4×28/5
=7/5