七年级有理数四则混合运算题九十道(有答案的)

1、七年级有理数四则混合运算题九十道（有答案的）39+-23+0+-16= 0-18+29+-52+60= 19-3+-2+-1+0+1+2= -3-301+125+301+-75= 50-1+-1/2+3/4+-1/4= -1-7/2+5/6+-0.5+4/5+19/6= 1.25-26.54+-6.14+18.54+6.14= -81.125+-17/5+-1/8+-0.6= -3-|98|+76+(-87)*2356+(-75)-(7)-(8+4+3)5+21*8/2-6-5968/21-8-11*8+61-2/9-7/9-564.6-(-3/4+1.6-4-3/4)1/2+3+5/6-7/

2、122/3-4-1/4*(-0.4)/1/3+222+(-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)/1/218-6/(-3)*(-2)(5+3/8*8/30/(-2)-3(-84)/2*(-3)/(-6)1/2*(-4/15)/2/3-3x+2y-5x-7y有理数的加减混合运算回答者：370116 -翰林文圣 十八级1-22 10:56我来评论您觉得最佳答案好不好？目前有5个人评价60% (3)40% (2)相关内容 初中一年级

3、有理数混合计算题(300道以上)带答案 谁有小学六年级至初一有理数的计算的计算题啊？ 关于有理数计算题和答案 谁有初一有理数计算题(我要1000道) 编写一个小学数学辅助教学软件，主要是测试小学低年更多关于300道简单的有理数运算的问题 查看同主题问题：有理数的混合运算 其他回答共1条(1) 算题(1 ) 3. 28-4 . 76+1 -;(2) 2. 75-2 -3 +1;(3) 42 + (-1 ) -1 + (-0.125 );(4) (-48) +82-(-25)+(-6)2;-+( ) X(-2.4).2.计算题：(10 5=50 )(1) -23+1 X (-1 ) 2+ (1 )

4、 2;(2) -14- (2-0.5) X X( )2-( )3;(3) -1 X1-3 X(- )2-( )2 X(-2)3 T- )3(4) (0.12+0.32) + -22+(-3)2-3 X ；(5)-6.24 X 32+31.2 -2)3+(- 0.51) X 624.-|98|+76+(-87)*2356+(-75)-(7)-(8+4+3)5+21*8/2-6-5968/21-8-11*8+61-2/9-7/9-564.6-(-3/4+1.6-4-3/4)1/2+3+5/6-7/122/3-4-1/4*(-0.4)/1/3+222+(-4)+(-2)+4*3-2*8-8*1/2+

5、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)/1/218-6/(-3)*(-2)(5+3/8*8/30/(-2)-3(-84)/2*(-3)/(-6)1/2*(-4/15)/2/3-3x+2y-5x-7y75+ 138 + (100-54 )85X(95 1440 +24)80400 (4300 +870-15) 240 X78 + (154-115 )1437 X27+27X563 75- (12+18 )T52160 一 83-79 ) X18280 + 840 +24X

6、5325 +13 X(266 250) 85 X(95 1440 +24)58870 汽105 + 20 X2) 1437 X27 + 27 X56381432 汽13 X52+ 78) 37.85- (7.85+6.4 ) X30156 4(17.7-7.2) +3 (947 599) + 76X6436X(913 276+23) 192 ( 54 + 38) X67(7.1-5.6) X0.9-1.15 +2.5 81432 +(13X52+78)5.4 寸2.6 X (3.7-2.9 ) +0.62(947 -599) + 76 X64 60 (9.5+28.9) 0.18 2.881

7、W.43 0.24 X3.5 20 X(2.44 1.8) 一 0.4 + 0.15 28-(3.4 1.25 X2.4) 0.8 X 15.5-(3.21 5.79) (31.83.2X4) +5 194 64.8+1.8 X0.9 36.72 +4.25 X9.9 3.416 3(0.016 X35)0.8 X(10 6.76) +1.2(136+64 ) X (65-345 +23)(6.8-6.8 X0.55)+8.5 0.12 X 4.80.12 X4.8 (58+37 ) + (64-9 X5)812-700 + (9+31 X11 )(3.2X1.5+2.5 ) +1.685+1

8、4 X (14+208 -26)120-36 X4+18+35(284+16 ) X (512-8208 18)9.72 X1.6-18.305 勺4/7 寸1/3 X (3/5-3/10 ) (4/5+1/4 ) +7/3+7/1012.78 0+ ( 13.4 + 156.6 )37.812-700 + (9+31 X11 )(136+64 ) X (65-345 +23) 3.2 X (1.5+2.5 ) +1.685+14 X (14+208 +26)(58+37 ) + (64-9 X5)(6.8-6.8 X0.55)+8.5 (284+16 ) X (512-8208 -18) 0

9、.12 X 4.80.12 X4.8 (3.2X1.5+2.5 ) +1.6 120- 36 X 4+ 18+35 10.1-510.75 X 05475.8 X (3.87-0.13 ) +4.2 X3.74 347+45 X2-4160 -2 32.52- (6+9.728 +3.2) X2.5 87 (58+37 ) + (64-9 X5) (7.1-5.6 ) X0.9-1.15 +2.5 (3.2 X1.5+2.5 ) +1.65.4 寸2.6 X (3.7-2.9) +0.62 12 X6+ (12-7.2) -63.2 X6+ (1.5+2.5 ) +1.6(3.2 X1.5+2

10、.5 ) +1.65.8 X (3.87-0.13 ) +4.2 X3.7433.02 - ( 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

11、/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)*1/61.3/7X 49/9/32. 8/9X 15/36 + 1/273. 12 X 5/6 2/9 X 34. 8 X 5/4 + 1/45. 6+/83 3/8+66. 4/7 X 5/9 + 3/7 X 5/97. 5/2 - ( 3/2 + 4/5)8. 7/8 +( 1/8 + 1/9)9. 9 X 5/6 + 5/610. 3/4 X 8/9/30.12 x +1.8

12、X0.9=7.2 (9 -5 X)X0.3=1.02 6.4 x- x=28+4.411. 7 X 5/49 + 3/1412. 6 X ( 1/2 + 2/3)13. 8 X 4/5 + 8 X 11/514. 31 X 5/65/6 -15. 9/7 -( 2/7 - 10/21 )16. 5/9 X 18 14 X 2/717. 4/5 X 25/16 + 2/3 X 3/418. 14 X 8/75/6 -X 12/1519. 17/323/4 X 9/2420. 3 X 2/9 + 1/321. 5/7 X 3/25 + 3/722. 3/14 XX 2/3 + 1/623. 1/5

13、 X 2/3 + 5/624. 9/22 + 1/11+ 1/225. 5/3 X 11/5 + 4/326. 45 X 2/3 + 1/3 X 1527. 7/19 + 12/19X 5/628. 1/4 + 3/4+ 2/329. 8/7X 21/16 + 1/230. 101X 1/51/5 -X 2131.50+ 160+40 (58+370 ) + (64-45 )32.120- 144 + 18+3533.347+45 X4160 - 5234 (58+37 ) + (64-9 X5)35.95 + (64-45 )36.178- 145 + 5X 6+42 420+58064 X

14、 21 - 2837.812-700 + (9+31 X11 )(136+64 ) X (65-345 -23)38.85+14 X (14+208 -26)39. (284+16 ) X (512-8208 -18)40.120- 36 X 4+ 18+3541. (58+37 ) + (64-9 X5)42.(6.8- 6.8 X 0.55) + 8.543.0.12 X 4.8 + 0.12 X 4.844. (3.2 X1.5+2.5 ) +1.6 (2) 3.2 X (1.5+2.5 ) +1.645.6- 1.6 + 4= 5.38+7.855.37=46.7.2-0.8 X 5=

15、6.19 X-0.43=47.6.5 X (4.8-1.2 X4) = 0.68 X1.9+0.32 X1.948.10.15- 10.75 X 054749.5.8 X (3.87-0.13 ) +4.2 X3.7450.32.52- (6+9.728 +3.2) X2.551.-5+58+13+90+78-(-56)+5052.-7*2-57/(353.(-7)*2/(1/3)+79/(3+6/4)54.123+456+789+98/(-4)55.369/33-(-54-31/15.5)56.39+3x42/2x(3x8)57.9x8x7/5x(4+6)58.11x22/(4+12/2)5

16、9.94+(-60)/101.aA3-2bA3+ab(2a-b)=aA3+2aA2b-2bA3-abA2=aA2(a+2b)-bA2(2b+a)=(a+2b)(aA2-bA2)=(a+2b)(a+b)(a-b)2.(xA2+yA2)A2-4y(xA2+yA2)+4yA2=(xA2+yA2-2y)A23.(xA2+2x)A2+3(xA2+2x)+xA2+2x+3=(xA2+2x)A2+4(xA2+2x)+3=(xA2+2x+3)(xA2+2x+1)x(x+1)(xA2+x-1)-24.(a+1)(a+2)+(2a+1)(a-2)-12=aA2+3a+2+2aA2-3a-2-12=3aA2-12=3(a+2)(a-2)5.xA2(y+z)A2-2xy(x-z)(y+z)+yA2(x-z)A2=x(y+z)-y(x-z)A2=(xz+yz)A2=zA2(x+y)