一点6×7点5×1点二五用简便运算怎么算完整版
一点6×7点5×1点二五用简便运算怎么算完整版
=0.8×2×7.5×1.25
=(0.8×1.25)×(7.5×2)
=1×15
=15
16×7点5×1点二五的简便运算五年级的简便运算
16*7.5*1.25
=8*2*7.5*1.25
=(2*7.5)*(8*1.25)
=15*10
=150
25×312×1点二五用简便运算怎么算
25×312×1.25
=25×(320-8)×1.25
=25×320×1.25-8×1.25×25
=25×4×80×1.25-8×1.25×25
=25×4×(80×1.25)-8×1.25×25
=100×100-10×25
=10000-250
=9750
0.0725×6前400 7二五×0点4×4 2×7点二五简便运算
0.0725×6400+725×0.4×4+2×7.25
=7.25×64+7.25×160+2×7.25
=7.25×(64+160+2)
=7.25×226
=1638.5
十八点4×1点二五-1点6×1点二五的简便运算
2.5*0.16+1.25*1.6
=1.25*2*0.16+1.25*1.6
=1.25*0.32+1.25*1.6
=1.25*(0.32+1.6)
=1.25*1.92
=2.4
0.72×1.2×1点二五×2点五怎么用简便运算
0.72×1.2×1.25×2.5
=(0.8×0.9)×(1+0.2)×1.25×2.5
=0.8×1.25×0.9×[(1+0.2)×2.5]
=1×0.9×(1×2.5+0.2×2.5)
=0.9×(2.5+0.5)
=0.9×3
=2.7
一点二五乘7点48乘80简便运算计算
一点二五乘7点48乘80简便运算计算
一点二五乘7点48乘80
=1.25*80*7.48
=100*7.48
=748
3.一三+1点七五+5点二五简便运算
3.一三+1点七五+5点二五简便运算
3.一三+1点七五+5点二五
=3.13+(1.75+5.25)
=3.13+7
=10.13
56×1点二五的简便运算
=56×1+56×1/4
=56+14
=70
二点5×1点二五×0点三二的简便运算
二点5×1点二五×0点三二的简便运算
二点5×1点二五×0点三二
=(2.5*0.4)*(1.25*0.8)
=1*1
=1
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