1樓:匿名使用者
(1)6÷3分之二
=6x3/2
=9(2)6x9分之4÷8分之3
=6x4/9x8/3
=6x8/3x4/9
=16x4/9
=64/9(9分之64)
用簡便方法計算下面各題. ( 9分之4 6分之5-3分之1)x36 12x(6分之1-8分之1
2樓:新野旁觀者
(4/9+5/6-1/3)×
36=4/9×36+5/6×-1/3×36=16+30-12
=3412×(1/6-1/8)×24
=12×1/6×24-12×1/8×24
=2×24-12×3
=48-36
=123/7x3/13x7x13
=(3/7×7)x(3/13x13)
=3×3
=93/8x(8+15)x1/3
=3/8×8×1/3+3/8×15×1/3=1+15/8
=2又7/8
7/13x5/11+5/13x4/11
=5/13x7/11+5/13x4/11
=5/13x(7/11+4/11)
=5/13x1
=5/13
98x2/5+4/5
=(98+2)×2/5
=100×2/5
=40(11/18+8/9)x2/3x1/2=3/2x2/3x1/2
=1×1/2
=1/2
3樓:愛玩剪刀石頭布
可不可寫在紙上拍張**,這樣都看不懂的
計算下面各題(有補充!)(1)4分之3×(4分之1-9分之1)÷9=?(2)5分之2×4分之3÷8分之7×5分之3=?
4樓:匿名使用者
(1)3/4×(1/4-1/9)÷9=(3/16-1/12)÷9=1/48-1/108=1/12(1/4-1/9)=1/12×5/36=5/432
(2)2/5×3/4÷7/8×3/5=(2×3)/(5×4)×8/7×3/5=3/10×8/7×3/5=(3×8×3)/(10×7×5)=36/175
(3)5/9×(1-2/13×5)=5/9-(5×2×5)/(9×13)=5/9-50/117=((5×13)-50)/117=15/117=5/39
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1 3 7 11 6 2 3 10 3 3 7 5 2 10 3 635 10 3 4 7 2 4 5 x 50 16,4 5 x 50 4 5 16 4 5 x 50 20,x 50 50 20 50 x 19.5 3 7 8 1 75 1 4 0.25 1 8 7 8 0.25 0.25 0.2...
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1 24 34 5 6?23 24 3 4 24 5 6 24 23,18 20 16,38 16,22 2 4 7 3 5?0.25 3 10 0.5,47 720 310 0.5,210 310 0.5,12 0.5,1 3 0.374 48 0.62 37.4 3.74,3.74 4.8 6....
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