能簡算的要簡算 1 1 3 ,能簡算的要簡算 1 1 4 1 3 5 6 2 7 2 3 5 7 12 1 3 3 4 3 1 5 3 5 2 1 3(要寫出過程)

2021-05-28 19:01:51 字數 2676 閱讀 9840

1樓:yzwb我愛我家

(1)1/4÷[(1/3+5/6)]*2/7=1/4×7/6×2/7

=1/12

(2)3/5*[(7/12-1/3)÷3/4]=3/5*(1/4*4/3)

=3/5*1/3

=1/5

(3)1-5/3÷5/2-1/3

=1-5/3*2/5-1/3

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

=1-1

=0祝你開心

脫式計算(能簡算的要簡算) ⑴1/4÷(2/3-3/2×1/3) ⑵24×(1/6+3/8+7/

2樓:昨夜星辰吉日

⑴1/4÷(2/3-3/2×1/3)

=1/4÷(2/3-1/2)=1/4÷(4/6-3/6)=1/4÷1/6=1/4x6=6/4=3/2;

⑵24×(1/6+3/8+7/12)=24x1/6+24x3/8+24x7/12=4+9+14=27;

⑶1/8×58+1/8×41+1/8=1/8x(58+41+1)=1/8x100=100/8=12.5.

3樓:

⑴1/4÷(2/3-3/2×1/3)=3/2

⑵24×(1/6+3/8+7/12)=27

⑶1/8×58+1/8×41+1/8=25/2

4樓:匿名使用者

(1)1/4÷(2/3一3/2×1/3)=1/4÷(4/6一3/6)=1/4×6/1=3/2

(簡算) (7/15-1/3)÷(1/3+1/5) (3/4+1/2)÷5/8 2/13+3/4÷9/10+1/6 [3/4-(5/8-1/4)]÷3/8

5樓:妙酒

(7/15-1/3)÷(1/3+1/5)

=(7-5)÷

(5+3)

=1/4

(3/4+1/2)÷5/8

=3/4x8/5+1/2x8/5

=6/5+4/5

=22/13+3/4÷9/10+1/6

=2/13+5/6+1/6

=2/13+1

=1又2/13

[3/4-(5/8-1/4)]÷3/8

=(3/4+1/4-5/8)x8/3

=3/8x8/3=1

計算下面各題,能簡算的要簡算。 45×(3/5+5/9) 3/14÷【6/7×(1/3+1/4)】 (7/3+7/4-7/12)×6/7

6樓:匿名使用者

45×(3/5+5/9) = 45×8/9 = 40

3/14÷【6/7×(1/3+1/4)】= 3/14÷【6/7×12/7】= 3/14÷2 = 3/28

(7/3+7/4-7/12)×6/7 = 7/3×6/7+7/4×6/7-7/12×6/7 = 2+3/2-1/2 = 3

(2/3-5/9×3/5)÷7/16 =(2/3-1/3)÷7/16 = 1/3*16/7 = 16/21

1/9×3+1/9×5+1/9 = 3/9+5/9+1/9 = 9/9 = 1

7/8×3/7+7/8 = 3/8+7/8 = 10/8 = 5/4

(1/2+11/8×3/2)÷1/2 = (1/2+11/8×3/2)×2 = 1/2×2+11/8×3/2×2 = 1 + 33/8 = 41/8

(1/3+1/5+1/15)×15 = 1/3×15 +1/5×15+1/15×15 = 5+3+1 = 9

能簡算要簡算(1)(4/5-1/2*4/5)÷2/3、(2)(1/6+1/8)*24*1/7、(3)128*17/126

7樓:淺唱年華

(1)3/5 (2)1 (3)1088/63

8樓:匿名使用者

(1)=(4/5-2/5)x3/2

=2/5x3/2

=3/5

(2)=1/6*24*1/7+1/8*24*1/7=4*1/7+3*1/7

=4/7+3/7

=1(3)

=127*64/63

=8128/63

9樓:

(bai1)(du4/5-1/2*4/5)÷zhi2/3=(1-1/2)*4/5×

dao3/2=1/2×4/5×3/2=3/5(回2)(1/6+1/8)*24*1/7=(1/6*24+1/8*24)*1/7=(4+3)*1/7=7*1/7=1

(3)128*17/126=(126+2)*17/126=17+2*17/126=17+17/63=17又

答17/63

脫式計算,能簡算要簡算 (1)3/8+3/4*2/3÷6、(2)3-1÷(5/7+6/7*1/3)、(3)1.75*6/7+3/14*7/4+7/4

10樓:雪中送炭新野

(1)3/8+3/4*2/3÷6

=3/8+1/2×1/6

=3/8+1/12

=11/24

(2)3-1÷(5/7+6/7*1/3)

=3-1÷(5/7+2/7)

=3-1

=2(3)1.75*6/7+3/14*7/4+7/4=7/4*(6/7+3/14+1)

=7/4*29/14

=29/8

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