Question

12.5乘7.8乘0.8用简便方法算

Answer 1

=12.5×0.8×7.8
=10×7.8
=78
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追问

6.4乘4.5+3.6乘45用简便方法算

Answer 2

12.5×7.8×0.8
=12.5×0.8×7.8
=10×7.8
=78

追问

97.5除2.5乘2.05用简便方法算

追答

97.5÷2.5×2.05
=39×(2+0.05)
=78+1.95
=79.95

Answer 3

=12.5*0.8*7.8

追答

=10*7.8=78

追问

52.8除13.2-1.5用简便方法算

Answer 4

追问

90.6除（100乘0.48）用简便方法算

Answer 5

12.5*0.8*7.8

追问

101乘0.36用简便方法算

追答

(100+1)*0.36