六年级混合运算 混合运算六年级练习题及答案

0六年级混合运算 。92×15 0 。08×15
=(0 。92 0 。08)×15
=1×15
=15

0 。72×1 。25×2 。5
=0 。
9×(0 。8×1 。25)×2 。5
=0 。9×1×2 。5
=2 。25

60×(1/12 1/15 1/4)
=60×1/12 60×1/15 60×1/4
=5 4 15
=24

(5/12-3/8)×72
=5/12×72-3/8×72
=30-27
=3

6/7-5/24÷7/12
=6/7-5/24×12/7
=12/14-5/14
=7/14
=1/2

[3/4×(7/16-1/4)]÷9/13
=3/4×(7/16-4/16)×13/9
=1/4×3/16×13/3
=13/64

2/3-7/8 1/3
=(2/3 1/3)-7/8
=1-7/8
=1/8

5/6-(3/7-1/6)
=(5/6 1/6)-3/7
=1-3/7
=4/7

1-1/3-2/3
=1-(1/3 2/3)
=1-1
=0

1 3/5-1/10
=1 6/10-1/10
=1 1/2
=1又1/2

3/8-12/13 5/8
=3/8 5/8-12/13
=1-12/13
=1/13

1-(1/2-3/4)
=1 3/4-2/4
=1 1/4
=5/4

1-1/2-1/4
=1/2-1/4
=2/4-1/4
=1/4

2/7-8/9 5/7
=(2/7 5/7)-8/9
=1-8/9
=1/9

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

1/2-(3/8-1/2)
=1/2 1/2-3/4
=1-3/8
=5/8

7×25/26
=7x(1-1/26)
=7×1-7×1/26
=7-7/26
=6又19/26

18又9/10×1/9
=(18 9/10)x1/9
=18×1/9 9/10×1/9
=2 1/10
=2又1/10

21又1/19×1/20
=(20 20/19)x1/20
=20×1/20 20/19×1/20
=1 1/19
=1又1/19

(25 2又5/21)×21/26
=(26 26/21)x21/26
=26×21/26 26/21×21/26
=21 1
=22

6/11×3/7 4/11×6/7
=6/11×3/7 6/11×4/7
=6/11x(3/7 4/7)
=6/11×1
=6/11

2 。
64×1 。7-2 。64×0 。7
=2 。64×(1 。7-0 。7)
=2 。64×1
=2 。64

31 。5×1 。07-3 。15×0 。7
=3 。
15×10 。7-3 。15×0 。7
=3 。15×(10 。7-0 。7)
=3 。15×10
=31 。5

2 。7×5 。7-2 。7 5 。3×2 。7
=2 。
7×(5 。7-1 5 。3)
=2 。7×10
=27

0 。625÷0 。125×0 。8
=(0 。625×0 。8)×8÷(0 。125×8)
=0 。
5×8÷1
=4

18 。6×6 。1 3 。9×18 。6
=18 。6×(6 。1 3 。9)
=18 。6×10
=186

52 。
5×2 。9 5 。45
=5 。25×29 5 。25 0 。2
=5 。25×(29 1) 0 。2
=5 。25×30 0 。2
=157 。5 0 。3
=157 。
7

0 。92×15 0 。08×15
=(0 。92 0 。08)×15
=1×15
=15

0 。72×1 。
25×2 。5
=0 。9×(0 。8×1 。25)×2 。5
=0 。9×1×2 。5
=2 。25

400 。6×7-2003×0 。4
=200 。
3×14-200 。3×4
=200 。3×(14-4)
=200 。3×10
=2003

300÷125÷8
=300÷(125×8)
=300÷1000
=0 。
3

396-96-172-28
=(396-96)-(172 28)
=300-200
=100

125×24
=125x8x3
=1000×3
=3000

26×15
=(20 6)x15
=20×15 6×15
=300 90
=390

25x99x4
=25x4x99
=100×99
=9900

250×32
=250x4x8
=1000×8
=8000

(98 98 98 98)x25
=4x98x25
=4x25x98
=100×98
=9800

3/4÷5/8×3/10
=3/4×8/5×3/10
=9/5×1/5
=9/25

1 。
25×(8 10)
=1 。25×8 1 。25×10
=10 12 。5
=22 。5

1 。24 0 。78 8 。76
=(1 。
24 8 。76) 0 。78
=10 0 。78
=10 。78

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