Question

1.6×0.25×12.5简便计算 33×1.03简便计算 5.6×99＋56×0.1简便计算 6.83×101－6.83简便计算

Answer 1

1.6×0.25×12.5简便计算
=4×0.25×0.4×12.5
=1×5
=5；
33×1.03简便计算
=33×（1+0.03）
=33+0.99
=33.99；

5.6×99＋56×0.1简便计算
=5.6×（99+1）
=5.6×100
=560；

6.83×101－6.83简便计算
=6.83×（101-1）
=6.83×100
=683；

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Answer 2

1.6×0.25×12.5
=(1+2.5)×0.4x4×0.25
=(1+2.5)×0.4x(4×0.25)
=(1+2.5)×0.4x(1)
=1x0.4+2.5x0.4
=0.4+1
=1.4

33乘以1.03
=33*(1+0.03)
=33*1+33*0.03
=33+0.99
=33.99
5.6×99＋56×0.1
=56*9.9+56*0.1
=56*（9.9+0.1）
=56*10
=560
6.83×101－6.83
=6.89*（101-1）
=6.89*100
=689

Answer 3

1.6×0.25×12.5
=4*0.4*0.25*12.5
=4*0.25*0.4*12.5
=0.4*12.5
=5
33×1.03
=33*1+33*0.03
=33+0.99
=33.99
5.6×99＋56×0.1
=5.6*99+5.6*10*0.1
=5.6*（99+1）
=5.6*100
=560
6.83×101－6.83
=6.83*（101-1）
=6.83*100
=683