五年级脱式计算

如题所述

脱式计算,即递等式计算,把计算过程完整写出来的运算,也就是脱离竖式的计算。在计算混合运算时,通常是一步计算一个算式(逐步计算,等号不能写在原式上),要写出每一步的过程。一般来说,等号要往前,不与第一行对齐
  也就是离开原式计算:
  如:
  25+65+98
  =90+98
  =188
  100-100÷25=100-4=96 250÷50+12×4=5+48=53
  如何脱式计算
  如何脱式计算?主要掌握的是记住要先算乘、除法,后算加、减法。在乘除法连继计算时中,要按从左往右的顺序依次计算。在脱式过程中要按运算顺序划出运算顺序线,还要做到“三核对”,一要核对从书上把题抄到作业本上数字、符号是否抄对。二要核对从横式抄到草稿竖式的数字、符号是否抄对。三要核对把草稿竖式上的得数,抄到横式上是否抄对,小数点是否点对地方,有无遗漏。
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第1个回答  2013-02-20
脱式计算:一:1. 3/7 × 49/9 - 4/3
2. 8/9 × 15/36 + 1/27
3. 12× 5/6 – 2/9 ×3
4. 8× 5/4 + 1/4
5. 6÷ 3/8 – 3/8 ÷6
6. 4/7 × 5/9 + 3/7 × 5/9
7. 5/2 -( 3/2 + 4/5 )
8. 7/8 + ( 1/8 + 1/9 )
9. 9 × 5/6 + 5/6
10. 3/4 × 8/9 - 1/3
11. 7 × 5/49 + 3/14
12. 6 ×( 1/2 + 2/3 )
13. 8 × 4/5 + 8 × 11/5
14. 31 × 5/6 – 5/6
15. 9/7 - ( 2/7 – 10/21 )
16. 5/9 × 18 – 14 × 2/7
17. 4/5 × 25/16 + 2/3 × 3/4
18. 14 × 8/7 – 5/6 × 12/15
19. 17/32 – 3/4 × 9/24
20. 3 × 2/9 + 1/3
21. 5/7 × 3/25 + 3/7
22. 3/14 ×× 2/3 + 1/6
23. 1/5 × 2/3 + 5/6
24. 9/22 + 1/11 ÷ 1/2
25. 5/3 × 11/5 + 4/3
26. 45 × 2/3 + 1/3 × 15
27. 7/19 + 12/19 × 5/6
28. 1/4 + 3/4 ÷ 2/3
29. 8/7 × 21/16 + 1/2
30. 101 × 1/5 – 1/5 × 21
31.50+160÷40 (58+370)÷(64-45)
32.120-144÷18+35
33.347+45×2-4160÷52
34(58+37)÷(64-9×5)
35.95÷(64-45)
36.178-145÷5×6+42 420+580-64×21÷28
37.812-700÷(9+31×11) (136+64)×(65-345÷23)
38.85+14×(14+208÷26)
39.(284+16)×(512-8208÷18)
40.120-36×4÷18+35
41.(58+37)÷(64-9×5)
42.(6.8-6.8×0.55)÷8.5
43.0.12× 4.8÷0.12×4.8
44.(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.6
45.6-1.6÷4= 5.38+7.85-5.37=
46.7.2÷0.8-1.2×5= 6-1.19×3-0.43=
47.6.5×(4.8-1.2×4)= 0.68×1.9+0.32×1.9
48.10.15-10.75×0.4-5.7
49.5.8×(3.87-0.13)+4.2×3.74
50.32.52-(6+9.728÷3.2)×2.5
第2个回答  2012-08-20
.120-36×4÷18+35
2.(58+37)÷(64-9×5)
3.(6.8-6.8×0.55)÷8.5
4.0.12× 4.8÷0.12×4.8
5.(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.6
6.6-1.6÷4= 5.38+7.85-5.37=
7.7.2÷0.8-1.2×5= 6-1.19×3-0.43=
8.6.5×(4.8-1.2×4)= 0.68×1.9+0.32×1.9
9.10.15-10.75×0.4-5.7
10.5.8×(3.87-0.13)+4.2×3.74
11.32.52-(6+9.728÷3.2)×2.5
12. 6 ×( 1/2 + 2/3 )
13. 8 × 4/5 + 8 × 11/5
14. 31 × 5/6 – 5/6
15. 9/7 - ( 2/7 – 10/21 )
16. 5/9 × 18 – 14 × 2/7
17. 4/5 × 25/16 + 2/3 × 3/4
18. 14 × 8/7 – 5/6 × 12/15
19. 17/32 – 3/4 × 9/24
20. 3 × 2/9 + 1/3
21. 5/7 × 3/25 + 3/7
22. 3/14 ×× 2/3 + 1/6
23. 1/5 × 2/3 + 5/6
24. 9/22 + 1/11 ÷ 1/2
25. 5/3 × 11/5 + 4/3
26. 45 × 2/3 + 1/3 × 15
27. 7/19 + 12/19 × 5/6
28. 1/4 + 3/4 ÷ 2/3
29. 8/7 × 21/16 + 1/2
30. 101 × 1/5 – 1/5 × 21
31.[-|98|+76+(-87)]*23[56+(-75)-(7)]-(8+4+3)
32.5+21*8/2-6-59
33.68/21-8-11*8+61
34.-2/9-7/9-56
35.4.6-(-3/4+1.6-4-3/4)
36.1/2+3+5/6-7/12
37.[2/3-4-1/4*(-0.4)]/1/3+2
38.22+(-4)+(-2)+4*3
39.-2*8-8*1/2+8/1/8
40.(2/3+1/2)/(-1/12)*(-12)
41.(-28)/(-6+4)+(-1)
42.2/(-2)+0/7-(-8)*(-2)
43.(1/4-5/6+1/3+2/3)/1/2
44.18-6/(-3)*(-2)
45.(5+3/8*8/30/(-2)-3
46.(-84)/2*(-3)/(-6)
47.1/2*(-4/15)/2/3
48.-3x+2y-5x-7y
49.2/3÷1/2-1/4×2/5
50. 2-6/13÷9/26-2/3
51.2/9+1/2÷4/5+3/8
52.10÷5/9+1/6×4
53.1/2×2/5+9/10÷9/20
54.5/9×3/10+2/7÷2/5
55.1/2+1/4×4/5-1/8
56.3/4×5/7×4/3-1/2
57.23-8/9×1/27÷1/27
58.8×5/6+2/5÷4
59.1/2+3/4×5/12×4/5
60.8/9×3/4-3/8÷3/4
61.5/8÷5/4+3/23÷9/11
62.3/7 × 49/9 - 4/3
63.8/9 × 15/36 + 1/27
64.12× 5/6 – 2/9 ×3
65.8× 5/4 + 1/4
66.6÷ 3/8 – 3/8 ÷6
67.4/7 × 5/9 + 3/7 × 5/9
68.5/2 -( 3/2 + 4/5 )
69.7/8 + ( 1/8 + 1/9 )
70.9 × 5/6 + 5/6
74.8 × 4/5 + 8 × 11/5
76.9/7 - ( 2/7 – 10/21 )
77.5/9 × 18 – 14 × 2/7
78.4/5 × 25/16 + 2/3 × 3/4
79.14 × 8/7 – 5/6 × 12/15
80.17/32 – 3/4 × 9/24
81.3 × 2/9 + 1/3
82.5/7 × 3/25 + 3/7
83.3/14 ×× 2/3 + 1/6
84.1/5 × 2/3 + 5/6
85.9/22 + 1/11 ÷ 1/2
86.5/3 × 11/5 + 4/3
87.45 × 2/3 + 1/3 × 15
88.7/19 + 12/19 × 5/6
89.1/4 + 3/4 ÷ 2/3
90.8/7 × 21/16 + 1/2
91.101 × 1/5 – 1/5 × 21
92.4.38 ÷ (36.94 + 34.3×0.2)
93.[(5.84 - 3.9 ) ÷0.4 + 0.15] ×0.92
94.[7.6 - 5 ×(0.3 + 0.9)]÷10
95.1.8×(1.4 - 0.26 ÷2)
96.0.27 ×99 + 0.27
97. 8 -0.8 ÷5 + 0.24 ×9
98. 0.25×1.25×40×8
99.(0.25 + 2.5 + 25)×0.4
100.8.4 + 7.66 + 2.34 +1.6
1. 3/7 × 49/9 - 4/3
2. 8/9 × 15/36 + 1/27
3. 12× 5/6 – 2/9 ×3
4. 8× 5/4 + 1/4
5. 6÷ 3/8 – 3/8 ÷6
6. 4/7 × 5/9 + 3/7 × 5/9
7. 5/2 -( 3/2 + 4/5 )
8. 7/8 + ( 1/8 + 1/9 )
9. 9 × 5/6 + 5/6
10. 3/4 × 8/9 - 1/3
11. 7 × 5/49 + 3/14
12. 6 ×( 1/2 + 2/3 )
13. 8 × 4/5 + 8 × 11/5
14. 31 × 5/6 – 5/6
15. 9/7 - ( 2/7 – 10/21 )
16. 5/9 × 18 – 14 × 2/7
17. 4/5 × 25/16 + 2/3 × 3/4
18. 14 × 8/7 – 5/6 × 12/15
19. 17/32 – 3/4 × 9/24
20. 3 × 2/9 + 1/3
21. 5/7 × 3/25 + 3/7
22. 3/14 ×× 2/3 + 1/6
23. 1/5 × 2/3 + 5/6
24. 9/22 + 1/11 ÷ 1/2
25. 5/3 × 11/5 + 4/3
26. 45 × 2/3 + 1/3 × 15
27. 7/19 + 12/19 × 5/6
28. 1/4 + 3/4 ÷ 2/3
29. 8/7 × 21/16 + 1/2
30. 101 × 1/5 – 1/5 × 21
31.[-|98|+76+(-87)]*23[56+(-75)-(7)]-(8+4+3)
32.5+21*8/2-6-59
33.68/21-8-11*8+61
34.-2/9-7/9-56
35.4.6-(-3/4+1.6-4-3/4)
36.1/2+3+5/6-7/12
37.[2/3-4-1/4*(-0.4)]/1/3+2
38.22+(-4)+(-2)+4*3
39.-2*8-8*1/2+8/1/8
40.(2/3+1/2)/(-1/12)*(-12)
41.(-28)/(-6+4)+(-1)
42.2/(-2)+0/7-(-8)*(-2)
43.(1/4-5/6+1/3+2/3)/1/2
44.18-6/(-3)*(-2)
45.(5+3/8*8/30/(-2)-3
46.(-84)/2*(-3)/(-6)
47.1/2*(-4/15)/2/3
48.-3x+2y-5x-7y
49.2/3÷1/2-1/4×2/5
50. 2-6/13÷9/26-2/3
51.2/9+1/2÷4/5+3/8
52.10÷5/9+1/6×4
53.1/2×2/5+9/10÷9/20
54.5/9×3/10+2/7÷2/5
55.1/2+1/4×4/5-1/8
56.3/4×5/7×4/3-1/2
57.23-8/9×1/27÷1/27
58.8×5/6+2/5÷4
59.1/2+3/4×5/12×4/5
60.8/9×3/4-3/8÷3/4
61.5/8÷5/4+3/23÷9/11
62.3/7 × 49/9 - 4/3
63.8/9 × 15/36 + 1/27
64.12× 5/6 – 2/9 ×3
65.8× 5/4 + 1/4
66.6÷ 3/8 – 3/8 ÷6
67.4/7 × 5/9 + 3/7 × 5/9
68.5/2 -( 3/2 + 4/5 )
69.7/8 + ( 1/8 + 1/9 )
70.9 × 5/6 + 5/6
74.8 × 4/5 + 8 × 11/5
76.9/7 - ( 2/7 – 10/21 )
77.5/9 × 18 – 14 × 2/7
78.4/5 × 25/16 + 2/3 × 3/4
79.14 × 8/7 – 5/6 × 12/15
80.17/32 – 3/4 × 9/24
81.3 × 2/9 + 1/3
82.5/7 × 3/25 + 3/7
83.3/14 ×× 2/3 + 1/6
84.1/5 × 2/3 + 5/6
85.9/22 + 1/11 ÷ 1/2
86.5/3 × 11/5 + 4/3
87.45 × 2/3 + 1/3 × 15
88.7/19 + 12/19 × 5/6
89.1/4 + 3/4 ÷ 2/3
90.8/7 × 21/16 + 1/2
91.101 × 1/5 – 1/5 × 21
92.4.38 ÷ (36.94 + 34.3×0.2)
93.[(5.84 - 3.9 ) ÷0.4 + 0.15] ×0.92
94.[7.6 - 5 ×(0.3 + 0.9)]÷10
95.1.8×(1.4 - 0.26 ÷2)
96.0.27 ×99 + 0.27
97. 8 -0.8 ÷5 + 0.24 ×9
98. 0.25×1.25×40×8
99.(0.25 + 2.5 + 25)×0.4
100.8.4 + 7.66 + 2.34 +1.6
1. 3/7 × 49/9 - 4/3
2. 8/9 × 15/36 + 1/27
3. 12× 5/6 – 2/9 ×3
4. 8× 5/4 + 1/4
5. 6÷ 3/8 – 3/8 ÷6
6. 4/7 × 5/9 + 3/7 × 5/9
7. 5/2 -( 3/2 + 4/5 )
8. 7/8 + ( 1/8 + 1/9 )
9. 9 × 5/6 + 5/6
10. 3/4 × 8/9 - 1/3
11. 7 × 5/49 + 3/14
12. 6 ×( 1/2 + 2/3 )
13. 8 × 4/5 + 8 × 11/5
14. 31 × 5/6 – 5/6
15. 9/7 - ( 2/7 – 10/21 )
16. 5/9 × 18 – 14 × 2/7
17. 4/5 × 25/16 + 2/3 × 3/4
18. 14 × 8/7 – 5/6 × 12/15
19. 17/32 – 3/4 × 9/24
20. 3 × 2/9 + 1/3
21. 5/7 × 3/25 + 3/7
22. 3/14 ×× 2/3 + 1/6
23. 1/5 × 2/3 + 5/6
24. 9/22 + 1/11 ÷ 1/2
25. 5/3 × 11/5 + 4/3
26. 45 × 2/3 + 1/3 × 15
27. 7/19 + 12/19 × 5/6
28. 1/4 + 3/4 ÷ 2/3
29. 8/7 × 21/16 + 1/2
30. 101 × 1/5 – 1/5 × 21
31.[-|98|+76+(-87)]*23[56+(-75)-(7)]-(8+4+3)
32.5+21*8/2-6-59
33.68/21-8-11*8+61
34.-2/9-7/9-56
35.4.6-(-3/4+1.6-4-3/4)
36.1/2+3+5/6-7/12
37.[2/3-4-1/4*(-0.4)]/1/3+2
38.22+(-4)+(-2)+4*3
39.-2*8-8*1/2+8/1/8
40.(2/3+1/2)/(-1/12)*(-12)
41.(-28)/(-6+4)+(-1)
42.2/(-2)+0/7-(-8)*(-2)
43.(1/4-5/6+1/3+2/3)/1/2
44.18-6/(-3)*(-2)
45.(5+3/8*8/30/(-2)-3
46.(-84)/2*(-3)/(-6)
47.1/2*(-4/15)/2/3
48.-3x+2y-5x-7y
49.2/3÷1/2-1/4×2/5
50. 2-6/13÷9/26-2/3
51.2/9+1/2÷4/5+3/8
52.10÷5/9+1/6×4
53.1/2×2/5+9/10÷9/20
54.5/9×3/10+2/7÷2/5
55.1/2+1/4×4/5-1/8
56.3/4×5/7×4/3-1/2
57.23-8/9×1/27÷1/27
58.8×5/6+2/5÷4
59.1/2+3/4×5/12×4/5
60.8/9×3/4-3/8÷3/4
61.5/8÷5/4+3/23÷9/11
62.3/7 × 49/9 - 4/3
63.8/9 × 15/36 + 1/27
64.12× 5/6 – 2/9 ×3
65.8× 5/4 + 1/4
66.6÷ 3/8 – 3/8 ÷6
67.4/7 × 5/9 + 3/7 × 5/9
68.5/2 -( 3/2 + 4/5 )
69.7/8 + ( 1/8 + 1/9 )
70.9 × 5/6 + 5/6
74.8 × 4/5 + 8 × 11/5
76.9/7 - ( 2/7 – 10/21 )
77.5/9 × 18 – 14 × 2/7
78.4/5 × 25/16 + 2/3 × 3/4
79.14 × 8/7 – 5/6 × 12/15
80.17/32 – 3/4 × 9/24
81.3 × 2/9 + 1/3
82.5/7 × 3/25 + 3/7
83.3/14 ×× 2/3 + 1/6
84.1/5 × 2/3 + 5/6
85.9/22 + 1/11 ÷ 1/2
86.5/3 × 11/5 + 4/3
87.45 × 2/3 + 1/3 × 15
88.7/19 + 12/19 × 5/6
89.1/4 + 3/4 ÷ 2/3
90.8/7 × 21/16 + 1/2
91.101 × 1/5 – 1/5 × 21
92.4.38 ÷ (36.94 + 34.3×0.2)
93.[(5.84 - 3.9 ) ÷0.4 + 0.15] ×0.92
94.[7.6 - 5 ×(0.3 + 0.9)]÷10
95.1.8×(1.4 - 0.26 ÷2)
96.0.27 ×99 + 0.27
97. 8 -0.8 ÷5 + 0.24 ×9
98. 0.25×1.25×40×8
99.(0.25 + 2.5 + 25)×0.4
100.8.4 + 7.66 + 2.34 +1.6

1.8又3分之5减去3又4分之1与1又10分之3的和,差是多少?

2.甲数是4又5分之1,比乙数的5倍少4/5,求乙数。

3.一个数与4又2分之1的和比5.75多2又4分之1,求这个数。

希望对你有帮助!!!
第3个回答  2012-08-17
0.8×[15.5-(3.21+5.79)]
(31.8+3.2×4)÷5
31.5×4÷(6+3)
0.64×25×7.8+2.2
2÷2.5+2.5÷2
194-64.8÷1.8×0.9
36.72÷4.25×9.9
5180-705×6
24÷2.4-2.5×0.8
(4121+2389)÷7
671×15-974
0.8×[7.9-(2+5)]
469×12+1492
405×(3213-3189)
3.416÷(0.016×35)
0.8×[(10-6.76)÷1.2]
340×(120-40÷8)
45×(720-1957÷19)
86+[4500+(2088÷36)÷2]
396×[74-(4875÷15-13×21)]
[1054-(174-168)]÷8
6048÷[(107-99)×9]
25*3+125*5+25*3+25
9999*3+101*11*(101-92)
(23/4-3/4)*(3*6+2)
3/7 × 49/9 - 4/3
8/9 × 15/36 + 1/27
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
3 × 2/9 + 1/3
5/7 × 3/25 + 3/7
3/14 ×× 2/3 + 1/6
1/5 × 2/3 + 5/6
9/22 + 1/11 ÷ 1/2
. 5/3 × 11/5 + 4/3
. 45 × 2/3 + 1/3 × 15
7/19 + 12/19 × 5/6
1/4 + 3/4 ÷ 2/3
8/7 × 21/16 + 1/2
101 × 1/5 – 1/5 × 21
50+160÷40
120-144÷18+35
347+45×2-4160÷52
(58+37)÷(64-9×5)
.95÷(64-45)
.178-145÷5×6+42
812-700÷(9+31×11)
.85+14×(14+208÷26)
120-36×4÷18+35
(58+37)÷(64-9×5)
(6.8-6.8×0.55)÷8.5
.0.12× 4.8÷0.12×4.8
(3.2×1.5+2.5)÷1.6
6-1.6÷4= 5.38+7.85-5.37=
7.2÷0.8-1.2×5= 6-1.19×3-0.43=
6.5×(4.8-1.2×4)=
5.8×(3.87-0.13)+4.2×3.74
32.52-(6+9.728÷3.2)×2.5
[(7.1-5.6)×0.9-1.15] ÷2.5
5.4÷[2.6×(3.7-2.9)+0.62]
12×6÷(12-7.2)-6
12×6÷7.2-6
0.68×1.9+0.32×1.9
(58+370)÷(64-45)
420+580-64×21÷28
136+6×(65-345÷23)

例:
1)25%*132+1/4*8 2)32*0.125*25
=1/4*132+1/4*8 =(4+8)*0.125*25
=1/4*(132+8) =(4*25)*(8*0.125)
=1/4*140 =100*1
=35 =1000
3)75%*76+25*4+0.75*12
=3/4*76+3/4*12+25*4
=3/4*88+100
=166
4)3200*1/8÷2/5+1270 5)(2/3+4/5)*7/6
=400*5/2+1270 =22/15*7/6
=1000+1270 =77/45
=2270
5)6*(1/2+2/3) 6)132*(44÷176)
=6*1/2+6*2/3 =132*1/4 =33
=3+4
=7本回答被网友采纳
第4个回答  2014-08-08
15.89+(6.75-5.89) 5.17-1.8-3.2 13.75-(6.48+3.75) 5.4÷0.6+(2.3-0.46) 3.68+7.56-2.68 9.24÷[(2.8+3.2)×0.5 ] 7.85+2.34-0.85+4.66 35.6-1.8-15.6-7.2 0.25×16.2×4 60.9+(13.53+5.37)÷10.8 4.8×7.8+78×0.52 4.8×100.1 3.5-3.5×0.9 5.86+1.8×1.2+4.14 25.48-(9.4-0.52) 4.2÷3.5 17.8÷(1.78×4) [(10-2.15×4.6)]×8.5 1.25×2.5×32 15.2÷0.25÷4 9.24÷[(2.8+3.2)×0.5 ] 27.5×3.7-7.5×3.7 0.79×199 10.4-9.6×0.35 [(6.35-2.15×4.6)]×0.85 2.31×1.2×0.5 (2.5-0.25)×0.4 2.5+7.5×(8.65-2.25) 60×0.98 28.8÷3.2-19.2÷3.2 57.6÷3.6+57.6÷6.4 7.2÷(3.6-1.2) (7.7+1.54)÷0.7
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