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125X16X25怎么简算
3.75x1.2
x16
-
125x
0.12
x1.6简便计算
?
答:
3.75×1.2×16-
125
×0.12×1.6 =3.75×1.2×16-
1.25
×10×10×0.12×1.6 =3.75×1.2×16-1.25×1.2×16 =(3.75-1.25)×16×1.2 =
2.5
×16×1.2 =2.5×4×4×1.2 =10×4.8 =48
3.75x1.2
x16
-
125x
0.12
x1.6简便计算
?
答:
3.75X1.2
X16
-125X0.12
X1.6
=3.75X1.2X1.6-
1.25X1
.2X16 =(3.75-1.25)X1.2X1.6 =2.5X1.2X1.6 =5X0.5X1.2X1.6 =(5X1.2)X(0.5X6)=
6X
3 =18
3.75x1.2
x16
-
125x
0.12
x1.6简便计算
?
答:
解:3.75x1.2
x16
-125x0.12
x1.6
=3.75x1.2x16-
1.25x1
.2x16=(3.75-1.25)×1.2×16=
2.5
×1.2×16=3×16=48
脱式
简算125X16
=?
答:
125x
(8X2) =
125X
8X2 =1000X2 =2000
42
x125x16怎样简算
答:
原式=42x2x(
125x
8)=84x1000 =84000
16×37×
125
用运算定律
简算
答:
16×37×125 =
125X16X
37 =125X(4X4)X37 =125X4X4X37 =500X4X37 =2000X37 =74000
125x25
x8x4x2x8
怎么简算
?
答:
125x25
x8x4x2x8 =125x8
x25
x4x2x8 =1000x100
x16
=1600000
125Ⅹ17-
125简算
答:
125Ⅹ17-125 =
125x16
=125x8x2 =1000x2 =2000
简便计算25x16
×
125
答:
回答:
25x16
×
125
=25x2*8×125 =50*1000 =50000
125x
39
x16
,
怎样简便方法计算
答:
原式 =
125x16x
39 =(125x8)x(2x39)=1000x78 =78000
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