1怎麼簡便怎麼計算。

2021-03-04 01:40:00 字數 5111 閱讀 2380

1樓:樂為人師

7/8-(1/6+3/8)

=7/8-1/6-3/8

=7/8-3/8-1/6

=1/2-1/6

=1/3

5-5/11-6/11

=5-(5/11+6/11)

=5-1

=43/4-2/9+1/4

=3/4+1/4-2/9

=1-2/9

=7/9

15又3/8-5又3/4+4.75

=15又3/8-5又3/4+4又3/4

=15又3/8-(5又3/4-4又3/4)=15又3/8-1

=14又3/8

5/8+1/8-0.2

=3/4-0.2

=0.55

7/12-1/4+4/5

=1/3+4/5

=17/15

=1又2/15

遞等式計算題5/6-3/4+1/3 11/12-(1/6-1/8) 7/12-(3/4-1/2) 1/2-(3/4-3/8)

2樓:妙酒

您好:5/6-3/4+1/3

=10/12-9/12+4/12

=5/12

11/12-(1/6-1/8)

=22/24-4/24+3/24

=21/24

=7/8

7/12-(3/4-1/2)

=7/12-1/4

=1/3

1/2-(3/4-3/8)

=1/2-3/8

=1/8

如果本題有什麼不明白可以追問,如果滿意記得采納如果有其他問題請採納本題後另發點選向我求助,答題不易,請諒解,謝謝。

祝學習進步!

3樓:匿名使用者

5/6-3/4+1/3(通分)

=10/12-9/12+4/12

=1/12+4/12

=5/12

11/12-(1/6-1/8)

=11/12-1/6+1/8(通分)

=22/24-4/24+3/24

=18/24+3/24

=21/24(約分)

=7/8

7/12-(3/4-1/2)

=7/12-3/4+1/2(通分)

=7/12-9/12+6/12

=13/12-9/12

=4/12

=1/3

1/2-(3/4-3/8)

=1/2-3/4+3/8

=8/16-12/16+6/16

=14/16-12/16

=2/16

=1/8

4樓:匿名使用者

5/6-

3/4+1/3

=10/12-9/12+4/12

=(10-9+4)/12

=5/12

11/12-(1/6-1/8)

=11/12-2/12+1/8

=9/12+1/8

=3/4+1/8

=6/8+1/8

=7/8

7/12-(3/4-1/2)

=7/12-(3/4-2/4)

=7/12-1/4

=7/12-3/12

=4/12

=1/3

1/2-(3/4-3/8)

=1/2-(6/8-3/8)

=1/2-3/8

=4/8-3/8

=1/8

5樓:府玉蘭迮丙

1、計算題:

解:1/3÷5/6÷16/15

=1/3×6/5×15/16=3/8

[1-(1/5+1/6)]÷1/12 =[1-11/30]×12=19/30×12=38/5

(5/6-3/4)÷(1/4-1/8)=1/12÷1/8=1/12×8=2/3

應用題:

解:30÷5/6×8/9=36×8/9=32(千克)答:丙筐梨的質量是32千克.

能簡便計算的要用簡便計算4/7+1/14-1/2 5/3-3/8-5/8 3/5+3/11+7/5+11 3/4-{5/6-1/3} 10

6樓:匿名使用者

4/7+1/14-1/2

=4/7-1/2 +1/14

=8/14-7/14+1/14

=(8-7+1)/14

=2/14

=1/7

5/3-3/8-5/8

=5/3-(3/8+5/8)

=5/3-1

=2/3

3/5+3/11+7/5+11 3/4-{5/6-1/3}=3/5+7/5+3/11+11

=2+11+3/11

=13+3/11

=13又311

3/4-{5/6-1/3}

=3/4-5/6+1/3

=9/12-10/12+4/12

=(9-10+4)/12

=3/12

=1/4

(數學)3/4+1/3-5/6= 3/8+1/2-1/4= 1/6-1/9+7/12= 1-2/5-2/7= 3/4+(4/5-1/4)= 3/5-(1/10+3/8)=

7樓:甜甜の★微笑

3/4+1/3-5/6=1/4 3/8+1/2-1/4= 5/8 1/6-1/9+7/12=23/36 1-2/5-2/7=11/35 3/4+(4/5-1/4)= 13/10 3/5-(1/10+3/8)=1/8 2/3-(5/6-5/8)= 11/24 2/3-4/7+5/6=13/14

用簡便的方法做

7/9+5/7+5/9=34/21 12/25-1/8-1/24=47/150 1-2/5-7/20=1/4

5/8+4/7+9/8-14/1=負數 5/9-(1/3+1/8)=7/72

從4/5裡減去1/5與2/7的和,差是多少?

4/5-(1/5+2/7)=11/35

2/5加上7/10,再減去11/20,得多少?

2/5+7/10-11/20=11/20

5/6加上5/8與1/4的差,和是多少?

5/6+(5/8-1/4)=29/24

8樓:懦弱的龍騎士

3/4+1/3-5/6= 9/12+4/12-10/12=1/4

3/8+1/2-1/4= 3/8+2/4-1/4=3/8+1/4=3/8+2/8=5/8

1/6-1/9+7/12= 3/4-1/9=23/36

1-2/5-2/7=1-(14/35+10/35)=11/35

3/4+(4/5-1/4)= 3/4+(16/20-5/20)=15/20+11/20=26/20=13/10

3/5-(1/10+3/8)=6/10--1/10-3/8==1/2-3/8=1/8

2/3-(5/6-5/8)=16/24-(20/24-15/24)=11/24

2/3-4/7+5/6=9/6-4/7=21/14-8/14=13/14

用簡便的方法做

7/9+5/7+5/9=(7/9+5/9)+5/7=12/9+5/7=4/3+5/7=28/21+15/21=43/21

12/25-1/8-1/24=12/25-(1/8+1/24)=12/25-(3/24+1/24)=12/25-1/6= 72/150-25/150=47/150

1-2/5-7/20= 1-(8/20+7/20)=1/4

[ 5/8+4/7+9/8-14/1=7/4+4/7-14=49/28+16/28-14=65/28-14= -83/7 ]

5/9-(1/3+1/8)=5/9-1/3-1/8=5/9-3/9-1/8=2/9-1/8=7/72

從4/5裡減去1/5與2/7的和,差是多少?

4/5-(1/5+2/7)=4/5-1/5-2/7=3/5-2/7=11/35

2/5加上7/10,再減去11/20,得多少?

(2/5+7/10)-11/20=(4/10+7/10)-11/20=11/10-11/20=22/20-11/20=11/20

5/6加上5/8與1/4的差,和是多少?

5/6+(5/8-1/4)=5/6+(5/8-2/8)=5/6+3/8=20/24+9/24=29/24

9樓:匿名使用者

熱,通分不行嗎!!!!

9/16+3/8+7/16+1/8 5/9+4/7+4/9 6/13-3/7+13/7-2/7 8/9+(2/3-1/2) 1+3/4-7/12 2/3-(1/5+1/6)

10樓:手機使用者

9/16+3/8+7/16+1/8

=9/16+7/16+3/8+1/8

=1+1/2

=3/2

11樓:

去shi吧,看不清。問題有亂七八糟。

最重要 的是沒分啊。

12樓:剎那永恆濱

69/16+3/8+7/16+1/8=(9/16+7/16)+(3/8+1/8)=1+1/2=3/2

5/9+4/7+4/9=5/9+4/9+4/7=1+4/7=11/7

6/13-3/7+13/7-2/7=6/13+(13/7-3/7-2/7)=6/13+8/7=42/91+104/91=156/91

8/9+(2/3-1/2)=8/9+6/9-1/2=28/18-9/18=19/18

1+3/4-7/12=1+(9/12-7/12)=1+1/6=7/6

2/3-(1/5+1/6)=4/6-1/6-1/5=1/2-1/5=3/10

5/6-5/12-7/18=30/36-15/36-14/36=1/36

6/11+8/13+5/11 =(6/11+5/11)+8/13=1+8/13=21/13

2-8/15-7/15 =-6/15-7/15=-13/15

可以不?

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