七年级有理数四则混合运算题九十道(有答案的)1整理版

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%

3、（ 2）相关内容 初中一年级有理数混合计算题（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 .计算题(1) 3. 28-4. 76+1 -;(2) 2. 75-2 -3 +1 ;(3) 42+ (-1 )-1 + (-0.125);(4) (-48) +82-(-25) +(-6)2;(5) - +( ) X (-2.4).2 .计算题：(10'

4、; X 5=50')(1) -23+1 X (-1 )2+(1 )2;-14- (2-0.5) x X ( )2-( )3;(3) -1 X 1-3X(- )2-( )2 X (-2)3 + (- )3(4) (0.12+0.32) + -22+(-3)2-3 X ;-6.24 32+31.2 *2)3+(-0.51) 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+

5、222+(-4)+(-2)+4*3-2*8-8*1/2+8/1/8(2/3+1/2)/(-1/12)*(-12)精选(-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 X 78 + ( 154-115) 1437X27+27X 563 75- (12+18)+15

6、 2160一(83-79) X 18280 + 840 + 24X5325 + 13 X (266 250) 85 X (95 1440 + 24)58870-(105 + 20X 2) 1437X 27 + 27X 56381432 + (13X 52+78) 37.85- (7.85+6.4) X 30 1564(17.7-7.2)+3 (947-599) + 76X64 36X (913276+23) 192 ( 54+38) X 67 (7.1-5.6) X 0.9-1.15+2.5 81432 + (13X 52+78)5.4 + 2.6 X (3.7-2.9) +0.62 (947

7、-599) +76X 64 60-(9.5 + 28.9) + 0.18 2.881 + 0.43 0.24 X 3.5 20 X (2.44 1.8) + 0.4 + 0.15 28-(3.4 1.25 X 2.4) 0.8 X15.5-(3.21 5.79)(31.8 3.2X 4) + 5 194 64.8+ 1.8X 0.9 36.72-4.25X 9.9 3.416 +(0.016X35)0.8X (10 6.76)+1.2(136+64) X ( 65-345 + 23)(6.868X0.55) + 8.50.12X 4.8 + 0.12X4.8 (58+37) + ( 64-9X

8、 5)812-700+ ( 9+31 X 11)(3.2X 1.5+2.5) + 1.685+14 X ( 14+208 - 26)120-36X4+ 18+35(284+16) X ( 512-8208 18) 9.72X 1.6-18.305 + 7 4/7+1/3 X (3/5-3/10) (4/5+1/4) +7/3+7/10 12.780+ ( 13.4+ 156.6 ) 37.812-700+ ( 9+31 X 11)(136+64) X ( 65-345 + 23)3.2X ( 1.5+2.5) + 1.685+14 X ( 14+208 + 26)(58+37) + ( 64-

9、9X 5)(6.868X0.55) + 8.5 (284+16) X ( 512-8208 - 18) 0.12X 4.8 + 0.12X4.8 (3.2X1.5+2.5) +1.6 120-36 冲白8+35 10.15-10.75 0.4-5.75.8X (3.87-0.13) +4.2X3.74 347+45X 2-4160 - 52 32.52- (6+9.728+3.2) X 2.5 87 (58+37) + ( 64-9X 5) (7.1-5.6) X 0.9-1.15 +2.5 (3.2 X 1.5+2.5) +1.6 5.4+ 2.6 X (3.7-2.9) +0.62 12X

10、6+ (12-7.2) -6 3.2X6+ (1.5+2.5) +1.6 (3.2 X 1.5+2.5) +1.65.8X (3.87-0.13) +4.2X3.7433.02- ( 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

11、)+(+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)*1/61.3/749/9 - 4/32. 8/9 15/36 + 1/273. 12 5/6 2/9 3X4. 8 5/4 + 1/45. 6 3/8 3/8 66. 4/7 5/9 + 3/7 5/9<7. 5/2 - ( 3/2 + 4/5 )8. 7/8 + ( 1/8 + 1/9

12、 )9. 9 5/6 + 5/610. 3/4 8 /9 - 1/30.12 % + 1.8X 0.9=7.2 (9-5 X)X 0.3=1.02 6.4 x - x =28+4.411. 7 5/49 + 3/1412. 6X( 1/2 + 2/3 )13. 8 4/5 + 81M514. 31 5/6 - 5/615. 9/7 - ( 2/7 - 10/21 )16. 5/918 - 14 2/717. 4/5 25/16 + 2/3 3/4<18. 14 8/7 - 5/6 12/1519. 17/32 - 3/4 9/2420. 3 2/9 + 1/321. 5/7 3/25 +

13、 3/722. 3/14 X 2/3 + 1/623. 1/5 2/3 + 5/624. 9/22 + 1/111/2+25. 5/3 11/5 + 4/326. 45 2/3 + 1/315X27. 7/19 + 12/195/6 X28. 1/4 + 3/42/3+29. 8/7 21/16 + 1/230. 1011/5 - 1/5 2131. 50+ 160 + 40 (58+370) + ( 64-45)32.120-144 倍+3533.347+45 2-4160 5234 (58+37) + ( 64-9X5)35.95 + ( 64-45)36.178-145 56+42 42

14、0+580-64 21 攵837.812-700 + ( 9+31 X 11)(136+64) X ( 65-345 - 23)38.85+14 X ( 14+208 - 26)39. (284+16) X ( 512-8208 - 18)1 0.120-36 4018+3541 . (58+37) + ( 64-9 X 5)42 .(6.8-6.8 0.55) &543.0.12 4.8 0.12 冲.844. (3.2X 1.5+2.5) +1.6 (2) 3.2 X (1.5+2.5) +1.645.6-1.6 4= 5.38+7.85-5.37=46.7.2 0.8-1.2 5

15、= 6-1.19 3-0.43=47.6.5 X (4.8-1.2X4) = 0.68 X 1.9+0.32 X 1.948.10.15-10.75 0.4-5.749.5.8 X (3.87-0.13) +4.2X 3.7450.32.52- (6+9.728 + 3.2) X 2.551.-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

16、+12/2)59.94+(-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)精选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)A