100道有理数混合运算加减乘除题含答案和过程

如题所述

-3+5.6+56.4*3+47/3

=171.8+47/3

=2812/15

减法法则:减去一个数,等于加上这个数的相反数。 即a–b = a + ( -b )

加减混合运算可以统一为加法运算。即a + b–c = a + b +(-c)

(–3)–(+5)+(–4)–(–10) 2、3–(+5)–(–1)+(–5)

 1–4 + 3–5 4、–2.4 + 3.5–4.6 + 3.5 5、 3–2 + 5–8

有理数的认识

正整数和正分数合称为正有理数,负整数和负分数合称为负有理数。因而有理数集的数可分为正有理数、负有理数和零。由于任何一个整数或分数都可以化为十进制循环小数,反之,每一个十进制循环小数也能化为整数或分数,因此,有理数也可以定义为十进制循环小数。

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第1个回答  推荐于2018-03-13
1. 2100-21×53+2255
2. (103-336÷21)×15
3. 800-(2000-9600÷8)
4. 40×48-(1472+328)÷5
5. (488+344)÷(202-194)
6. 2940÷28+136×7
7. 605×(500-494)-1898
8. (2886+6618)÷(400-346)
9. 9125-(182+35×22)
10. (154-76)×(38+49)
11. 3800-136×9-798
12. (104+246)×(98÷7)
13. 918÷9×(108-99)
14. (8645+40×40)÷5
15. (2944+864)÷(113-79)
16. 8080-1877+1881÷3
17. (5011-43×85)+3397
18. 2300-1122÷(21-15)
19. 816÷(4526-251×18)
20. (7353+927)÷(801-792)
21. (28+172)÷(24+16)
22. 6240÷48+63×48
23. 950-28×6+666
24. 86×(35+117÷9)
25. 2500+(360-160÷4)
26. 16×4+6×3
27.39÷3+48÷6
28.24×4-42÷3
29.7×6-12×3
30.56÷4+72÷8
1)-23÷1 ×(-1 )2÷(1 )2;
(2)-14-(2-0.5)× ×[( )2-( )3];
(3)-1 ×[1-3×(- )2]-( )2×(-2)3÷(- )3
(4)(0.12+0.32) ÷ [-22+(-3)2-3 × ];
(5)-6.24×32+31.2×(-2)3+(-0.51) ×624.
[-|98|+76+(-87)]*23[56+(-75)-(7)]-(8+4+3)
5+21*8/2-6-59
68/21-8-11*8+61
-2/9-7/9-56
4.6-(-3/4+1.6-4-3/4)
1/2+3+5/6-7/12
[2/3-4-1/4*(-0.4)]/1/3+2
22+(-4)+(-2)+4*3
-2*8-8*1/2+8/1/8
(2/3+1/2)/(-1/12)*(-12)
(-28)/(-6+4)+(-1)
2/(-2)+0/7-(-8)*(-2)
(1/4-5/6+1/3+2/3)/1/2
18-6/(-3)*(-2)
(5+3/8*8/30/(-2)-3
(-84)/2*(-3)/(-6)
1/2*(-4/15)/2/3
-3x+2y-5x-7y

75÷〔138÷(100-54)〕 85×(95-1440÷24)
80400-(4300+870÷15) 240×78÷(154-115)
1437×27+27×563 〔75-(12+18)〕÷15
2160÷〔(83-79)×18〕 280+840÷24×5
325÷13×(266-250) 85×(95-1440÷24)
58870÷(105+20×2) 1437×27+27×563
81432÷(13×52+78) [37.85-(7.85+6.4)] ×30
156×[(17.7-7.2)÷3] (947-599)+76×64
36×(913-276÷23) [192-(54+38)]×67
[(7.1-5.6)×0.9-1.15]÷2.5 81432÷(13×52+78)
5.4÷[2.6×(3.7-2.9)+0.62] (947-599)+76×64 60-(9.5+28.9)]÷0.18 2.881÷0.43-0.24×3.5 20×[(2.44-1.8)÷0.4+0.15] 28-(3.4 1.25×2.4) 0.8×〔15.5-(3.21 5.79)〕 (31.8 3.2×4)÷5 194-64.8÷1.8×0.9 36.72÷4.25×9.9 3.416÷(0.016×35) 0.8×[(10-6.76)÷1.2]
(136+64)×(65-345÷23) (6.8-6.8×0.55)÷8.5
0.12× 4.8÷0.12×4.8 (58+37)÷(64-9×5)
812-700÷(9+31×11) (3.2×1.5+2.5)÷1.6
85+14×(14+208÷26) 120-36×4÷18+35
(284+16)×(512-8208÷18) 9.72×1.6-18.305÷7

4/7÷[1/3×(3/5-3/10)] (4/5+1/4)÷7/3+7/10
12.78-0÷( 13.4+156.6 ) 37.812-700÷(9+31×11) (136+64)×(65-345÷23) 3.2×(1.5+2.5)÷1.6
85+14×(14+208÷26) (58+37)÷(64-9×5)
(6.8-6.8×0.55)÷8.5 (284+16)×(512-8208÷18)
0.12× 4.8÷0.12×4.8 (3.2×1.5+2.5)÷1.6
120-36×4÷18+35 10.15-10.75×0.4-5.7
5.8×(3.87-0.13)+4.2×3.74 347+45×2-4160÷52
32.52-(6+9.728÷3.2)×2.5 87(58+37)÷(64-9×5)
[(7.1-5.6)×0.9-1.15] ÷2.5 (3.2×1.5+2.5)÷1.6
5.4÷[2.6×(3.7-2.9)+0.62] 12×6÷(12-7.2)-6
3.2×6+(1.5+2.5)÷1.6 (3.2×1.5+2.5)÷1.6
5.8×(3.87-0.13)+4.2×3.74
33.02-(148.4-90.85)÷2.5
(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)本回答被提问者和网友采纳
第2个回答  2011-10-07
需要40道有理数的加减乘除混合运算,很急,包括答案及过程
第3个回答  2011-10-08
zxdv
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