小学六年级分数乘分数法计算题

小学六年级分数乘分数法计算题

    3/7 × 49/9 - 4/3

    12× 5/6 – 2/9 ×3 

    8× 5/4 + 1/4 

    6÷ 3/8 – 3/8 ÷6 

    4/7 × 5/9 + 3/7 × 5/9 

    5/2 -( 3/2 + 4/5 ) 

    7/8 + ( 1/8 + 1/9 ) 

    9 × 5/6 + 5/6 

    3/4 × 8/9 - 1/3 

    7 × 5/49 + 3/14 

    6 ×( 1/2 + 2/3 ) 

    8 × 4/5 + 8 × 11/5 

    31 × 5/6 – 5/6 

    9/7 - ( 2/7 – 10/21 ) 

    5/9 × 18 – 14 × 2/7 

    4/5 × 25/16 + 2/3 × 3/4 

    14 × 8/7 – 5/6 × 12/15 

    17/32 – 3/4 × 9/24


    分数乘法的运算法则:

    分数乘整数时,用分数的分子和整数相乘的积做分子,分母不变。(能约分要在计算中先约分)

    分数乘分数,用分子相乘的积做分子,分母相乘的积做分母,能约分的要约成最简分数(在计算中约分)。

    但分子和分母不能为零。

    能约分的要先约分,再计算。

    意义:

    分数乘整数的意义与整数乘法的意义相同,就是求几个相同加数的和的简便运算。一个数与分数相乘,可以看作是求这个数的几分之几是多少。  

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第1个回答  推荐于2017-11-18
4/9×4/3=16/27 1/3×1/3=1/9 1/2×1/3=1/6 2/7×7/2×2/7=2/7 21/25×25/42=1/2 4/5×3/4=3/5 8/7×1/2=4/7 7/4×1/4×1/2=7/32
1/7×1/2=1/14 2/3×5/6=5/9 1/5×3/8=3/40 3/5×5/8=3/8 6/7×3/2=9/7 5/6×8/3=20/9 4/11×3/4=3/11 4/9×3/8=1/6 5/3×1/5=1/3 4/3×4/9=16/27 1/3×1/2=1/6 2/7×1/2=1/7 41/12×1/4=41/48 1/4×3/16=3/64 1/12×9/4=3/16 75/8×1/5=15/8
7/12×1/9= 7/108 2/3×7/3=14/9 3/8×9/4=27/32 5/3×3/5=1
4/5×5/8=1/2 7/9×9/7=1 2/3×1/7=2/21 1/4×3/50=3/200
4/5×1/2= 2/5 2/3×29/8=29/12 3/2×7/9=7/6 2/3×3/4=1/2
5/6×1/3=5/18 6/5×1/6 =1/5 2/1×7/2=7 3/2×1/3=1/2
1/22×4/5=2/55 5/6×8/3=20/9 4/11×3/4=3/11 2/3×5/6=5/9
1/5×3/8=3/40 3/5×5/8=3/8 8/7×1/2=4/7 7/4×1/2=7/8
1/7×1/2=1/14 2/3×5/6=5/9 8/7×3/2=12/7 5/12×1/9=5/108
7/4××1/2=7/8 1/7×1/2=1/14 2/3×5/6=5/9 2/3×1/2=1/3
2/3×5/6=5/9 1/5×3/8=3/40 2/3×7/3=14/9 8/7×1/2=4/7
1/7×1/2=1/14 2/3×5/6=5/9 1/5×3/8=3/40 3/5×5/8=3/8
5/6×1/3=5/18 6/5×1/6 =1/5 2/1×7/2=7 3/2×1/3=1/2
1/22×4/5=2/55 5/6×8/3=20/9 4/11×3/4=3/11 2/3×5/6=5/9
1/5×3/8=3/40 3/5×5/8=3/8 4/3×4/9=16/27 1/3×1/2=1/6
1/7×5/2=5/14 1/3×5/6=5/18 1/5×3/8=3/40 3/5×5/8=3/8 6/7×3/2=9/7 5/6×8/3=20/9 4/11×3/4=3/11 4/9×3/8=1/6 5/3×1/5=1/3 4/3×4/9=16/27 1/3×1/2=1/6 2/7×1/2=1/7
6/7×3/2=9/7 5/6×8/3=20/9 4/11×3/4=3/11 3/5×5/8=3/8 8/7×1/2=4/7 7/4×1/2=7/8 1/7×1/2=1/14 2/3×5/6=5/9
4/9×3/8=1/6 5/3×1/5=1/3 4/3×4/9=16/27 1/3×1/2=1/6 2/7×1/2=1/7 41/12×1/4=41/48 1/4×3/16=3/64 1/12×9/4=3/16 7/12×1/9= 7/108 2/3×7/3=14/9 3/8×9/4=27/32 5/3×3/5=1
4/5×1/2= 2/5 1/3×1/3=1/9 2/3×5/6=5/9 1/5×3/8=3/40 3/5×5/8=3/8 6/7×3/2=9/7 5/6×8/3=20/9 4/5×3/4=3/5
8/7×1/2=4/7 7/4×1/2=7/8 1/7×1/2=1/14 1/3×1/3=1/9
4/5×5/8=1/2 7/9×9/7=1 2/3×1/7=2/21 1/4×3/5=3/20
4/5×1/2= 2/5 2/3×29/8=29/12 3/2×7/9=7/6 2/3×3/4=1/2
5/6×1/3=5/18 6/5×1/6 =1/5 2/1×7/2=7 3/2×1/3=1/2
1/22×4/5=2/55 5/6×8/3=20/9 4/11×3/4=3/11 2/3×5/6=5/9
4/11×3/4=3/11 2/3×5/6=5/9 5/6×8/3=20/9 4/5×3/4=3/5
1/5×3/8=3/40 3/5×5/8=3/8 8/7×1/2=4/7 7/4×1/4=7/16
4/9×3/8=1/6 5/3×1/5=1/3 4/3×4/9=16/27 1/3×1/2=1/6
5/6×8/3=20/9 4/11×3/4=3/11 1/7×1/2=1/14 2/3×5/6=5/9
1/2×1/3=1/6 1/4×3/16=3/64 4/11×3/4=3/11 4/9×3/8=1/6 5/3×1/5=1/3 4/3×4/9=16/27 1/3×1/2=1/6 2/7×1/2=1/7 41/12×1/4=41/48 1/4×3/16=3/64 1/12×9/4=3/16 75/8×1/5=15/8
7/12×1/9=7/108 2/3×7/3=14/9 1/12×9/4=3/16 75/8×1/5=15/8
5/8×1/5=1/8
望采纳本回答被网友采纳
第2个回答  2020-10-21

六年级数学上册人教 分数乘分数的计算方法

第3个回答  2020-08-04
3/7 × 49/9 - 4/3
12× 5/6 – 2/9 ×3
8× 5/4 + 1/4
6÷ 3/8 – 3/8 ÷6
4/7 × 5/9 + 3/7 × 5/9
5/2 -( 3/2 + 4/5 )
7/8 + ( 1/8 + 1/9 )
9 × 5/6 + 5/6
3/4 × 8/9 - 1/3
7 × 5/49 + 3/14
6 ×( 1/2 + 2/3 )
8 × 4/5 + 8 × 11/5
31 × 5/6 – 5/6
9/7 - ( 2/7 – 10/21 )
5/9 × 18 – 14 × 2/7
4/5 × 25/16 + 2/3 × 3/4
14 × 8/7 – 5/6 × 12/15
17/32 – 3/4 × 9/24
第4个回答  2021-09-02
无语了怎么会有这种人恶心死了
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