求初一数学计算题70道

要初一数学计算题70道,不要应用题,填空题等,只要计算题,计算题可以有乘方,括号,分数,乘除加减等,我在线等!
一楼的我要的是乘方正负数等的运算,不是小学2练级的题

(一)计算题:
(1)23+(-73)
(2)(-84)+(-49)
(3)7+(-2.04)
(4)4.23+(-7.57)
(5)(-7/3)+(-7/6)
(6)9/4+(-3/2)
(7)3.75+(2.25)+5/4
(8)-3.75+(+5/4)+(-1.5)
(9)(-17/4)+(-10/3)+(+13/3)+(11/3)
(10)(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)
(11)(+1.3)-(+17/7)
(12)(-2)-(+2/3)
(13)|(-7.2)-(-6.3)+(1.1)|
(14)|(-5/4)-(-3/4)|-|1-5/4-|-3/4|)
(15)(-2/199)*(-7/6-3/2+8/3)
(16)4a)*(-3b)*(5c)*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

0.12χ+1.8×0.9=7.2 (9-5χ)×0.3=1.02 6.4χ-χ=28+4.4

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

51.-5+58+13+90+78-(-56)+50
52.-7*2-57/(3
53.(-7)*2/(1/3)+79/(3+6/4)
54.123+456+789+98/(-4)
55.369/33-(-54-31/15.5)
56.39+{3x[42/2x(3x8)]}
57.9x8x7/5x(4+6)
58.11x22/(4+12/2)
59.94+(-60)/10

参考资料:http://zhidao.baidu.com/question/44103095.html?si=1

温馨提示:内容为网友见解,仅供参考
第1个回答  2013-01-22
1)23+(-73)
(2)(-84)+(-49)
(3)7+(-2.04)
(4)4.23+(-7.57)
(5)(-7/3)+(-7/6)
(6)9/4+(-3/2)
(7)3.75+(2.25)+5/4
(8)-3.75+(+5/4)+(-1.5)
(9)(-17/4)+(-10/3)+(+13/3)+(11/3)
(10)(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)
(11)(+1.3)-(+17/7)
(12)(-2)-(+2/3)
(13)|(-7.2)-(-6.3)+(1.1)|
(14)|(-5/4)-(-3/4)|-|1-5/4-|-3/4|)
(15)(-2/199)*(-7/6-3/2+8/3)
(16)4a)*(-3b)*(5c)*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

0.12χ+1.8×0.9=7.2 (9-5χ)×0.3=1.02 6.4χ-χ=28+4.4

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

51.-5+58+13+90+78-(-56)+50
52.-7*2-57/(3
53.(-7)*2/(1/3)+79/(3+6/4)
54.123+456+789+98/(-4)
55.369/33-(-54-31/15.5)
56.39+{3x[42/2x(3x8)]}
57.9x8x7/5x(4+6)
58.11x22/(4+12/2)
59.94+(-60)/10
第2个回答  2013-02-11
1)23+(-73)
(2)(-84)+(-49)
(3)7+(-2.04)
(4)4.23+(-7.57)
(5)(-7/3)+(-7/6)
(6)9/4+(-3/2)
(7)3.75+(2.25)+5/4
(8)-3.75+(+5/4)+(-1.5)
(9)(-17/4)+(-10/3)+(+13/3)+(11/3)
(10)(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)
(11)(+1.3)-(+17/7)
(12)(-2)-(+2/3)
(13)|(-7.2)-(-6.3)+(1.1)|
(14)|(-5/4)-(-3/4)|-|1-5/4-|-3/4|)
(15)(-2/199)*(-7/6-3/2+8/3)
(16)4a)*(-3b)*(5c)*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

0.12χ+1.8×0.9=7.2 (9-5χ)×0.3=1.02 6.4χ-χ=28+4.4

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

51.-5+58+13+90+78-(-56)+50
52.-7*2-57/(3
53.(-7)*2/(1/3)+79/(3+6/4)
54.123+456+789+98/(-4)
55.369/33-(-54-31/15.5)
56.39+{3x[42/2x(3x8)]}
57.9x8x7/5x(4+6)
58.11x22/(4+12/2)
59.94+(-60)/10
第3个回答  2008-10-03
1.a&b=b/a+a/b
则(-3)&5=5/(-3)+(-3)/5=-(3/5)-(5/3)=-34/15

2.(-2/3)*(-8/5)+(-0.25)
=(2/3)*(8/5)-1/4
=16/15-1/4
=74/60-15/60
=59/60

3.3=-(-3),5=-(-5)
1: 2 × (6 × (5 - 3))
2: 2 × 6 ×(5 - 3)
3: (2 × 6) × (5 - 3)
4: (2 - 3 + 5) × 6
5: ((2 - 3) + 5) × 6
6: (2 - (3 - 5)) × 6
7: 2 × 3 × 5 - 6
8: (2 × 3) × 5 - 6
9: (2 × 3 × 5) - 6
10: ((2 × 3) × 5) - 6
11: (2 × (3 × 5)) - 6
12: 2 × (3 × 5) - 6
13: (2 + 5 - 3) × 6
14: ((2 + 5) - 3) × 6
15: (2 + (5 - 3)) × 6
16: (2 × (5 - 3)) × 6
17: 2 × (5 - 3) × 6
18: 2 × ((5 - 3) × 6)
19: 2 × 5 × 3 - 6
20: (2 × 5) × 3 - 6
21: (2 × 5 × 3) - 6
22: ((2 × 5) × 3) - 6
23: (2 × (5 × 3)) - 6
24: 2 × (5 × 3) - 6
25: 6 × (2 - 3 + 5)
26: 6 × ((2 - 3) + 5)
27: 6 × (2 - (3 - 5))
28: 6 ÷ 2 ×(3 + 5)
29: (6 ÷ 2) × (3 + 5)
30: 6 ÷ (2 ÷ (3 + 5))
31: 6 × (2 + 5 - 3)
32: 6 × ((2 + 5) - 3)
33: 6 × (2 + (5 - 3))
34: 6 × (2 × (5 - 3))
35: 6 × 2 ×(5 - 3)
36: (6 × 2) × (5 - 3)
37: (6 ÷ 2 + 5) × 3
38: ((6 ÷ 2) + 5) × 3
39: 6 ÷ 2 ×(5 + 3)
40: (6 ÷ 2) × (5 + 3)
41: 6 ÷ (2 ÷ (5 + 3))
42: (6 × (3 + 5)) ÷ 2
43: 6 × (3 + 5) ÷ 2
44: 6 × ((3 + 5) ÷ 2)
45: 6 × (5 + 2 - 3)
46: 6 × ((5 + 2) - 3)
47: 6 × (5 + (2 - 3))
48: 6 × 5 - 2 × 3
49: (6 × 5) - 2 × 3
50: 6 × 5 -(2 × 3)
51: (6 × 5) - (2 × 3)
52: (6 × (5 + 3)) ÷ 2
53: 6 × (5 + 3) ÷ 2
54: 6 × ((5 + 3) ÷ 2)
55: 6 × (5 - 3 + 2)
56: 6 × ((5 - 3) + 2)
57: 6 × (5 - (3 - 2))
58: 6 × 5 - 3 × 2
59: (6 × 5) - 3 × 2
60: (6 × (5 - 3)) × 2
61: 6 × (5 - 3) × 2
62: 6 × ((5 - 3) × 2)
63: 6 × 5 -(3 × 2)
64: (6 × 5) - (3 × 2)
65: 3 × 2 × 5 - 6
66: (3 × 2) × 5 - 6
67: (3 × 2 × 5) - 6
68: ((3 × 2) × 5) - 6
69: (3 × (2 × 5)) - 6
70: 3 × (2 × 5) - 6
71: 3 × (6 ÷ 2 + 5)
72: 3 × ((6 ÷ 2) + 5)
73: (3 + 5) ÷ 2 × 6
74: ((3 + 5) ÷ 2) × 6
75: (3 + 5) ÷ (2 ÷ 6)
76: 3 × 5 × 2 - 6
77: (3 × 5) × 2 - 6
78: (3 × 5 × 2) - 6
79: ((3 × 5) × 2) - 6
80: (3 × (5 × 2)) - 6
81: 3 × (5 × 2) - 6
82: (3 + 5) × 6 ÷ 2
83: ((3 + 5) × 6) ÷ 2
84: (3 + 5) × (6 ÷ 2)
85: 3 × (5 + 6 ÷ 2)
86: 3 × (5 + (6 ÷ 2))
87: (5 + 2 - 3) × 6
88: ((5 + 2) - 3) × 6
89: (5 + (2 - 3)) × 6
90: 5 × 2 × 3 - 6
91: (5 × 2) × 3 - 6
92: (5 × 2 × 3) - 6
93: ((5 × 2) × 3) - 6
94: (5 × (2 × 3)) - 6
95: 5 × (2 × 3) - 6
96: (5 + 6 ÷ 2) × 3
97: (5 + (6 ÷ 2)) × 3
98: 5 × 6 - 2 × 3
99: (5 × 6) - 2 × 3
100: 5 × 6 -(2 × 3)
101: (5 × 6) - (2 × 3)
102: 5 × 6 - 3 × 2
103: (5 × 6) - 3 × 2
104: 5 × 6 -(3 × 2)
105: (5 × 6) - (3 × 2)
106: (5 + 3) ÷ 2 × 6
107: ((5 + 3) ÷ 2) × 6
108: (5 + 3) ÷ (2 ÷ 6)
109: (5 - 3 + 2) × 6
110: ((5 - 3) + 2) × 6
111: (5 - (3 - 2)) × 6
112: (5 - 3) × 2 × 6
113: ((5 - 3) × 2) × 6
114: (5 - 3) × (2 × 6)
115: 5 × 3 × 2 - 6
116: (5 × 3) × 2 - 6
117: (5 × 3 × 2) - 6
118: ((5 × 3) × 2) - 6
119: (5 × (3 × 2)) - 6
120: 5 × (3 × 2) - 6
121: (5 + 3) × 6 ÷ 2
122: ((5 + 3) × 6) ÷ 2
123: (5 + 3) × (6 ÷ 2)
124: (5 - 3) × 6 × 2
125: ((5 - 3) × 6) × 2
126: (5 - 3) × (6 × 2)

参考资料:百度搜搜

第4个回答  2008-10-06
(2a^2+3a+2)/(a+1)-(a^2-a-5)/(a+2)-(3a^2-4a-5)/(a-2)+(2a^2-8a+5)/(a-3)

(-1)的3次方-(1-0.5)/{1/3*[2-(-3)的2次方]}

23+(-73)

(-84)+(-49)

7+(-2.04) 54: 6 × ((5 + 3) ÷ 2)
55: 6 × (5 - 3 + 2)
56: 6 × ((5 - 3) + 2)
57: 6 × (5 - (3 - 2))
58: 6 × 5 - 3 × 2
59: (6 × 5) - 3 × 2
60: (6 × (5 - 3)) × 2
61: 6 × (5 - 3) × 2
62: 6 × ((5 - 3) × 2)
63: 6 × 5 -(3 × 2)
64: (6 × 5) - (3 × 2)
65: 3 × 2 × 5 - 6
66: (3 × 2) × 5 - 6
67: (3 × 2 × 5) - 6
68: ((3 × 2) × 5) - 6
69: (3 × (2 × 5)) - 6
70: 3 × (2 × 5) - 6
71: 3 × (6 ÷ 2 + 5)
72: 3 × ((6 ÷ 2) + 5)
73: (3 + 5) ÷ 2 × 6
74: ((3 + 5) ÷ 2) × 6
75: (3 + 5) ÷ (2 ÷ 6)
76: 3 × 5 × 2 - 6
77: (3 × 5) × 2 - 6
78: (3 × 5 × 2) - 6
79: ((3 × 5) × 2) - 6
80: (3 × (5 × 2)) - 6
81: 3 × (5 × 2) - 6
82: (3 + 5) × 6 ÷ 2
83: ((3 + 5) × 6) ÷ 2
84: (3 + 5) × (6 ÷ 2)
85: 3 × (5 + 6 ÷ 2)
86: 3 × (5 + (6 ÷ 2))
87: (5 + 2 - 3) × 6
88: ((5 + 2) - 3) × 6
89: (5 + (2 - 3)) × 6
90: 5 × 2 × 3 - 6
91: (5 × 2) × 3 - 6
92: (5 × 2 × 3) - 6
93: ((5 × 2) × 3) - 6
94: (5 × (2 × 3)) - 6
95: 5 × (2 × 3) - 6
96: (5 + 6 ÷ 2) × 3
97: (5 + (6 ÷ 2)) × 3
98: 5 × 6 - 2 × 3
99: (5 × 6) - 2 × 3
100: 5 × 6 -(2 × 3)
101: (5 × 6) - (2 × 3)
102: 5 × 6 - 3 × 2
103: (5 × 6) - 3 × 2
104: 5 × 6 -(3 × 2)
105: (5 × 6) - (3 × 2)
106: (5 + 3) ÷ 2 × 6
107: ((5 + 3) ÷ 2) × 6
108: (5 + 3) ÷ (2 ÷ 6)
109: (5 - 3 + 2) × 6
110: ((5 - 3) + 2) × 6
111: (5 - (3 - 2)) × 6
112: (5 - 3) × 2 × 6
113: ((5 - 3) × 2) × 6
114: (5 - 3) × (2 × 6)
115: 5 × 3 × 2 - 6
116: (5 × 3) × 2 - 6
117: (5 × 3 × 2) - 6
118: ((5 × 3) × 2) - 6
119: (5 × (3 × 2)) - 6
120: 5 × (3 × 2) - 6
121: (5 + 3) × 6 ÷ 2
122: ((5 + 3) × 6) ÷ 2
123: (5 + 3) × (6 ÷ 2)
124: (5 - 3) × 6 × 2
125: ((5 - 3) × 6) × 2
126: (5 - 3) × (6 × 2)

4.23+(-7.57)

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

9/4+(-3/2)

(-17/4)+(-10/3)+(+13/3)+(11/3) (2)(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)

(+1.3)-(+17/7)

(-2)-(+2/3)

|(-7.2)-(-6.3)+(1.1)|

(-5/4)-(-3/4)|-|1-5/4-|-3/4|)

1+1/(1+2) +1/(1+2+3)+1/(1+2+3+4)+......+1/(1+2+3+......+2004)

(+1)+(-21/2)+(-83/37)+(-9.5)

(+0.5)+(-13/4)+(-2.75)+(+11/2)

求80道初一数学有理数加减法计算题,带-和+号,不带分数
42 + (33 + 7) = 42 + 40 = 82 78 - (36 - 6) = 78 - 30 = 48 75 - 20 + 40 = 55 + 40 = 95 88 - 8 + 60 = 80 + 60 = 140 70 - (48 + 2) = 70 - 50 = 20 (45 - 17) + (9 - 3) = 28 + 6 = 34 (45 - 17) + (9 - 6) = 28 + 3 =...

求300道初一的数学计算题,但是代数之类的、
1) 66x+17y=3967 25x+y=1200 答案:x=48 y=47 (2) 18x+23y=2303 74x-y=1998 答案:x=27 y=79 (3) 44x+90y=7796 44x+y=3476 答案:x=79 y=48 (4) 76x-66y=4082 30x-y=2940 答案:x=98 y=51 (5) 67x+54y=8546 71x-y=5680 答案:x=80 y=59 (6) 42x-95y=...

求80道初一数学有理数加减法计算题,带-和+号,不带分数
90-(72-70)=90-2=88 42+(33+7)=42+40 =82 78-(36-6)=78-30=48 75-20+40 =55+40=95 88-8+60 =80+60 =140 70-(48+2)=70-50=20 (45-17)+(9-3)=28+6=34, (45-17)+(9-6)=28+3=31, (45-18)+(9-3)=27+6=33 (45-18)+(9-6)=27+3=30, (45-...

初一数学方程计算题50带答案的
答案:x=70 y=78 8)33x+49y=4237 92x+2y=6428 答案:x=69 y=40 9)0x+56y=3920 64x+90y=9244 答案:x=46 y=70 10)91x+8y=4696 51x+66y=5154 答案:x=48 y=41 11)76x+90y=12152 52x+0y=4004 答案:x=77 y=70 12)47x+55y=6777 19x+48y=4131 答案:x=81 y=54 ...

140道最难算的初一上学期的计算题
我这儿什麽题都有,你要那道自己找! 1.125*3+125*5+25*3+25 2.9999*3+101*11*(101-92) 3.(23\/4-3\/4)*(3*6+2) 4. 3\/7 × 49\/9 - 4\/3 5. 8\/9 × 15\/36 + 1\/27 6. 12× 5\/6 – 2\/9 ×3 7. 8× 5\/4 + 1\/4 8. 6÷ 3\/8 – 3\/8 ÷6 9. 4\/7 × 5\/9 + ...

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(16) 91x+70y=5845 95x-y=4275 答案:x=45 y=25 (17) 29x+44y=5281 88x-y=3608 答案:x=41 y=93 (18) 25x-95y=-4355 40x-y=2000 答案:x=50 y=59 (19) 54x+68y=3284 78x+y=1404 答案:x=18 y=34 (20) 70x+13y=3520 52x+y=2132 答案:x=41 y=50 (21) ...

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70、[2\/3-4-1\/4*(-0.4)]\/1\/3+2 71、22+(-4)+(-2)+4*3 72、-2*8-8*1\/2+8\/1\/8 73、(2\/3+1\/2)\/(-1\/12)*(-12)74、(-28)\/(-6+4)+(-1)75、2\/(-2)+0\/7-(-8)*(-2)76、(1\/4-5\/6+1\/3+2\/3)\/1\/2 77、18-6\/(-3)*(-2)78、(-84)\/2*(-3...

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(16) 91x+70y=5845 95x-y=4275 答案:x=45 y=25 (17) 29x+44y=5281 88x-y=3608 答案:x=41 y=93 (18) 25x-95y=-4355 40x-y=2000 答案:x=50 y=59 (19) 54x+68y=3284 78x+y=1404 答案:x=18 y=34 (20) 70x+13y=3520 52x+y=2132 答案:x=41 y=50 (21) ...

我是一个初一新生,要找70道有理数加减乘除乘方混合运算的题
2011-3-17 我要初一的150道计算题、60道方程、60道整式计算、30道有理数混合运算 16 2007-11-4 我急需初一的有理数混合运算,乘方算式,谁有啊? 2010-10-7 初一找30道数学计算题。(有理数混合运算) 不要答案,只要题目就行啦!... 13 更多关于70道有理数加减乘除乘方混合运算的题的问题>> 查看同主题...

求40道初一上册数学计算题,不是应用题,最好不要方程
1-4x\/9-1\/9=x\/2-13x\/6+10\/6 4x\/9-x\/2+13\/6=10\/6-4-1\/9 8x\/18-9x\/18+39x\/18=30\/18-18\/18-2\/18 38x\/18=18\/10 x=10\/18÷38\/18 x=10\/18×18\/38 x=5\/19 (5x2-2x+3)+(3x2+5x+2)x2y +2xy2 –y3 +3xy2 –4x2y-x3 3ab-4ab+8ab-7ab+ab=___.7x-(...

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