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125×54x4简便运算
4X4
2X15怎样
简便运算
?
答:
原式=42x(15
x4
)=42x60 =2520
125
x25x64的
简便计算
答:
解:
125x25x64 =25x5x25x4x4x4
=(25x4)x(5x4)x(25x4)=100x20x100 =200000
要
简便运算
!
125
x16 = = =
答:
原式 =
125x(8x2)=(125x8)x2 =1000x2 =2000
供参考。
简便运算
:
25X9x14x4
答:
=(
5×
2)×(5×2)×3×3×2×7 =10×10×9×14 =900×14 =12600
125
x32
x4简便运算
?
答:
简便计算过程方法如下 解:
125x32x4 =125x8x4x4 =(125x8)x(4x4)=1000x16 =16000
120×45的
简便运算
?
答:
简便计算
:25x12
4x4
=25x4x124 =100x124 =12400 102x45 =(100+2)x45 =100x45+2x45 =4500+90 =4590
125
+198+75 =125+75+198 =200+200-2 =400-2 =398 97x78+78 =(97+1)x78 =(100-2)x78 =100x78-2x78 =7800-156 =7644 ...
脱式
简便运算
四年级
答:
简便计算
:16x25 =16x5x5 =80x5 =400 16x
125
=
4x4
x125 =125x4x4 =500x4 =2000 28x25 =28x5x5 =140x5 =700 32x125 =4x8x125 =125x4x8 =500x8 =4000 25x44 =5x5x44 =44x5x5 =220x5 =1100 125x18 =125x2x9 =250x9 =2250 ...
125
x25x48
简便运算
答:
125
x25x48 =(125x8)x(25x4)=1000x100 =100000
(4×4)×25的
简便运算
?
答:
解:原式=(4×4)×25 =4×25×4 =100×4 =400
126x
4x4简便运算
?
答:
126×4×4,
简便运算
……126×4×4=(125+1)×4×4=
125×
4×4+1×4×4=500×4+16=2000+16=2016
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