六年級的數學題,分數四則混合運算簡便演算法

2021-03-09 19:48:18 字數 3189 閱讀 7585

1樓:匿名使用者

第一題乘法分配律分復

別乘,制11

第二題先算除法,化到12/14,再減,

bai1/14

第三題分

du配zhi

第四題先把後面變dao成4/9*5/6,再提取5/6,分配律,5/6第五題變成4*5/4-4/5*1/4,直接算,四又五分之四第六題先算中括號裡的,再算外面,70/11

2樓:愛學習的人

題:du5/9x(9/5+18) 5/9x5/6+4/9÷

zhi6/5

=dao5/9×9/5+5/9×18 =5/9×5/6+4/9×5/6

=1+10 =(5/9+4/9)×5/6

=11 =1×5/6

=5/6

13/14-15/28÷5/8 4÷4/5-4/5÷4

=13/14-15/28×8/5 =4×5/4-4/5×1/4

=13/14-3/7×2 =5+1/5

=13/14-6/7 =26/5

=1/14

(5/6-3/4)÷3/8 7/11÷[2/5-(1-7/10)}

=(5/6-3/4)×8/3 =7/11÷[2/5-3/10]

=5/6×8/3-3/4×8/3 =7/11÷1/10

=20/9-2 =70/11

=2/9

3樓:匿名使用者

5/9x(9/5+18) 5/9x5/6+4/9÷6/5

=5/9×9/5+5/9×18 =5/9×5/6+4/9×5/6

=1+10 =(5/9+4/9)×5/6

=11 =1×5/6

=5/6

13/14-15/28÷5/8 4÷4/5-4/5÷4

=13/14-15/28×8/5 =4×5/4-4/5×1/4

=13/14-3/7×2 =5+1/5

=13/14-6/7 =26/5

=1/14

(5/6-3/4)÷3/8 7/11÷[2/5-(1-7/10)}

=(5/6-3/4)×8/3 =7/11÷[2/5-3/10]

=5/6×8/3-3/4×8/3 =7/11÷1/10

=20/9-2 =70/11

=2/9

4樓:羅未家憶雪

題:5/9x(9/5+18)

5/9x5/6+4/9÷6/5

=5/9×回9/5+5/9×18

=5/9×5/6+4/9×5/6

=1+10

=(答5/9+4/9)×5/6

=11=1×5/6

=5/6

13/14-15/28÷5/8

4÷4/5-4/5÷4

=13/14-15/28×8/5

=4×5/4-4/5×1/4

=13/14-3/7×2

=5+1/5

=13/14-6/7

=26/5

=1/14

(5/6-3/4)÷3/8

7/11÷[2/5-(1-7/10)}

=(5/6-3/4)×8/3

=7/11÷[2/5-3/10]

=5/6×8/3-3/4×8/3

=7/11÷1/10

=20/9-2

=70/11

=2/9

5樓:懷貝嶽香巧

題:5/9x(9/5+18)

5/9x5/6+4/9÷

zhi6/5

=dao5/9×回9/5+答5/9×18

=5/9×5/6+4/9×5/6

=1+10

=(5/9+4/9)×5/6

=11=1×5/6

=5/6

13/14-15/28÷5/8

4÷4/5-4/5÷4

=13/14-15/28×8/5

=4×5/4-4/5×1/4

=13/14-3/7×2

=5+1/5

=13/14-6/7

=26/5

=1/14

(5/6-3/4)÷3/8

7/11÷[2/5-(1-7/10)}

=(5/6-3/4)×8/3

=7/11÷[2/5-3/10]

=5/6×8/3-3/4×8/3

=7/11÷1/10

=20/9-2

=70/11

=2/9

小學六年級上冊數學題 分數四則混合運算【用簡便的方法做】

6樓:叫啥知不道

(bai1)24x(11/12-7/8)

=24*11/12-24*7/8

=22-21

=1(2)du6-(3/7÷zhi3/14+6/13)=6-(3/7*14/3+6/13)

=6-(2+6/13)

=6-2-6/13

=3又dao7/13

(3)1-5/8÷25/8-3/10

=1-5/8*8/25-3/10

=1-1/5-3/10

=1-(2/10+3/10)

=1-1/2

=1/2

7樓:暝夜之心

=24×11/12-24×7/8=22-21=1 =6-(2+6/13)=3又7/13 =1-(1/5+3/10)=1/2

8樓:夏_沫悲傷

(1)24*11/12-24*7/8=22-21=1

(2)6-2-6/13=4-6/13=46/13

(3)1-1/5-3/10=1-(2/10+3/10)=1-1/2=1/2

9樓:prince毛絨兔兔

(1)24x11/12-24x7/8=2x11+3x7=43

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