3/7乘5/9乘28乘45简便计算怎麼做
3/7乘5/9乘28乘45简便计算怎麼做
7分之3×9分之5×28×45
解:原式=(7分之3×28)×(9分之5×45)
=12×25
=300
即7分之3×9分之5×28×45=300
5/34 3/17的和乘以34简便计算
(5/34 +3/17)x34
=(5/34+6/34)x34
=11/34x34
=11
祝天天向上。
42乘5/41 简便计算
42乘5/41
=42*5/41
=(41+1)*5/41
=5+5/41
不明白请追问.
1.5除【5/6乘(1-1/3)】简便计算
1.5÷【5/6×(1-1/3)】
=1.5÷【5/6×2/3】
=1.5÷5/9
=1.5×9/5
=2.7
28乘54加28乘47减28简便计算
28乘54加28乘47减28简便计算
28乘54加28乘47减28
=28*(54+47-1)
=28*100
=2800
11/12×9的积乘乘6×5/38的积的简便计算是
11/12×9的积乘乘6×5/38的积的简便计算是
11/12×9的积乘乘6×5/38的积
=11/12*9*6*5/38
=(11*9*5)/(2*38)
=495/76
5/8 5/6刻起来乘以4/25用简便计算怎麼做
(5/8+5/6)x4/25
=(4/8+4/6)x5/25
=(1/2+2/3)x1/5
=(3/6+4/6)x1/5
=7/6x1/5
=7/30
50乘5/1除以500/1乘5000/1,简便计算
50×1/5÷1/500×1/5000
=50×1/5×500×1/5000
=1
39/57乘28加28/57乘18简便计算
39/57×28+28/57×18
=28/57×39+28/57×18
=28/57×(39+18)
=28/57×57
=28
1.25乘六又3/5×8简便计算拜托
1.25乘六又3/5×8简便计算拜托
=1.25x6.6x8
=1.25x8x6.6
=10x6.6
=66