1樓:匿名使用者
脫式計算,即遞等式計算,把計算過程完整寫出來的運算,也就是脫離豎式的計算。在計算混合運算時,通常是一步計算一個算式(逐步計算,等號不能寫在原式上),要寫出每一步的過程。一般來說,等號要往前,不與第一行對齊
也就是離開原式計算:
如: 25+65+98
=90+98
=188
100-100÷25=100-4=96 250÷50+12×4=5+48=53
如何脫式計算
如何脫式計算?主要掌握的是記住要先算乘、除法,後算加、減法。在乘除法連繼計算時中,要按從左往右的順序依次計算。
在脫式過程中要按運算順序劃出運算順序線,還要做到「三核對」,一要核對從書上把題抄到作業本上數字、符號是否抄對。二要核對從橫式抄到草稿豎式的數字、符號是否抄對。三要核對把草稿豎式上的得數,抄到橫式上是否抄對,小數點是否點對地方,有無遺漏。
2樓:匿名使用者
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
3樓:匿名使用者
脫式計算: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
4樓:24k純愛冪
.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減去3又4分之1與1又10分之3的和,差是多少?
2.甲數是4又5分之1,比乙數的5倍少4/5,求乙數。
3.一個數與4又2分之1的和比5.75多2又4分之1,求這個數。
希望對你有幫助!!!
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