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125X54x4简便运算
脱式
简便运算
四年级
答:
=125x4x4 =500x4 =2000
28x25 =28x5x5 =140x5 =700 32x125 =4x8x125 =125x4x8 =500x8 =4000 25x44 =5x5x44 =44x5x5 =220x5 =1100 125x18 =125x2x9 =250x9 =2250
125
乘16乘15用
简便
方法怎么算?
答:
125
*16*15 =(125*8)*(2*15)=1000*30 =30000
16x
125简便计算
答:
原式 =2x8x125 =2x(8x125)=2x1000 =2000 或者 =4x4x25x5
=(4x5)x(4x25)=20x100 =2000
(25Ⅹ
125
)Ⅹ(16Ⅹ4)
简便
方法?
答:
(25Ⅹ
125
)Ⅹ(16Ⅹ4)=25x4x25x5x
4x4
=25x4x25x4
x5
x4 =100x100x20 =10000x20 =200000
125
x16x125的
简便计算
怎么写?
答:
125x16x125 =25x5x4x4x25x5
换下位置 =25x4x25x4x5x5 =100x100x25 =250000
25×
125X
64用
简便方法计算
答:
25x
125x
64 =25x125x8x8 =(125x8)x(25x8)=1000x200 =200000 如图
125
x25x64简算怎么简算?
答:
解:
125
x25x64 =25
x5
x25x
4x4x4
=(25x4)x(5x4)x(25x4)=100x20x100 =200000
125
×5×64×5
简便运算
怎么算?
答:
乘法
算
没有分先后顺序所以原式 =
125
*5*8*8*5 =1000*5*40 =1000*200 =200000
64Ⅹ25X
125
简便运算
?
答:
64Ⅹ25X
125
简便运算
?64Ⅹ25X125 简便运算——64Ⅹ25X125 =8x8x25x25
x5
=8x25x8x25x5 =200x200x5 =200x1000 =200000
25x64x
125
如何
简便计算
答:
=25x(
4x4x4
)x25
x5
=(25x4)X(4x25)X(4
x5
)=200000
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