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小升初计算题精选.doc

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1、1一、能简算的要简算1 0.8 23 80 0.4( 1.5 )534152534311.250.25 24(1 ) 32768573 0.2 271564131365236(2 1 ) 9 ( ) 92435359105321 ( )1 ( 5.4 1 )(1 0.65)158761325423320.7 0.7 + 0.7 8( + )52 8365321(2 2.05) ( )3105220765312( + ) ( + ) + 35632105736152424 1.25 0.75 +0.4 ( + )2453 6587313.2( 1 )+ 3 2 1 +2 +4 +38512452

2、1.8 + 2.225 24( + )41 816210513 - 189018 ( + )32978120.899+0.8 3 3 7.86.35+9.20.65735980.37+0.635.98 7.651(3 3.09)1020( ) 645.67+ 0.36567 ( + )43512 324612416.312.31 ( + )8+ 75578527191.252.532 + + 4.853 3.6+ 6.153213153533 ( ) 240 +45015 + 5 15869531175442(1 ) ( ) 722143620345+180 12 + 441273( ) (

3、+ ) 7254318543953240 +45018 2.254.8 + 77.50.48+( ) ( + )326548320915243.59.9+0.35 10.2(1.75+ )50%4112142(4.46+0.14) 0.75 + 75%943538(4.20.4) 0.5 ( + )982314( + ) ( + )53192105260114 2 1 9 9.8+9.25 9376451201.37.36320.13 3.64( 0.6)50.83.60.80.6 8.86.75+9.20.25 ( + )24 + 127834874374.871(2.12.09) 2( )

4、9 627136568198 ( )10739835915.8 +14.2 39( + ) 3 + 5 + 10187319185188.5+0.755+6.51 +( 0.25)433198416753.62.8+7.47.2 23+ +17823179( + ) 18 +( )213518765833.2554 7.77+7.7+27.7 (0.25+ )(1.75 )8587+ + (80%60%)99+9980% 18 9753 172+( + ) 0.251.25327412532二、 解方程6:4.8= 3(x1.2)=1.5x+0.9 14: =4: xx4 8521x x+2=

5、14 :4=x: x x2=5 52413216541x x+1=13 42:x= : : = :x53215731209530.7+4x=6.5 x1.4=3.6+ x :x= x:0.7543331656X( + )= :8=x: 3x+31.5=931527943: =4x: 7.5:x=24:12 3x6=8.258x x=63 : =x:0.1 x+ x=32141841326: =x: x =4 : = :x416203123120952x+2.7=24.7 0.6:36%= :x 4.2x3=6.4454X x=3.6 = : =x:159861x379461x x=4.9 6:

6、x= : 8x39=37325141= :x= :6 :0.1=x:365.1x463274941 0.5+ x=3 0.3652x=0.4 =243 x182.77X+ x= 12x+730%=14.7 x0.85x=303154:4=x: : =x: (1+10%)x=3324180三、 脱式计算(能简算的要简算)+ (2 )( + )21345243512544.85 3 3.4+0.153 7.53 (42.5 )5523521 0.8 2+3 85% +0.4( 1.5 )53415254311.250.25 24(1 )+ 32716857 + 0.2+ 2715641365236

7、(2 1 + ) 9 ( + )9432539105321 ( + )1 (5.41 )(1 +0.65) 1 58763542033280.7 +0.7 +0.7 8( + )532836527.635%+6.50.76 (1514 )7418+ + + + 216072985521192813 21.7(15.7+2 )312( ) 1.2517.6+36.180%+2.6312.597142797 54.80.80.40.68 6.9610.10.696952.750.72+ 2.75 + ( 0.375 ) 25731865320.250.390.4 63.75(3.5+13.75)

8、7.10.12586.73.25+13.375% + 3.2153016四、 解方程X x= 10.12x=1.86 + =16125 4x29= 8440%x =28 x20%x=12x5.6210 21: =x:12 (x+9)=5x : =x:3983143 2x= 875%3x=2.1 =5.8:2.976327 5.4x( ) 8.79998.795421584125%0.25+60 4 1.250.75+0.4453321.6+1.667+1.6 2015 10.18.60.8610731( + ) 8.0998+8.092510341(1 + ) 2.5(1.9+1.9+1.9+

9、1.9) 23612( + ) ( + )17 19513117295101.8 +2.225% ( ) 251.2532416541934.21.51.560% 4.831.56+0.172.4499+999.9 24 +51 0.65101435196.73.25+3.30.75 5.2117 371+ + + + 5 513251729143( 7 7) 3.41.8+7.62.21546152812.53225% 1( )362134.599+4.5 47 7.86.35+2.20.65 461 ( ) 36( + + )98431674192110.4+ (1 )( + )13765

10、343524183+ + + 98711979760.8+ +80% 251.25400.81375413( + )2119 6.76.7+6.72.1+6.71.2215948( + ) +9 +99 +999 +9999387655454+ + ( + )273151939273911.8 +2.225% (1 1) 5.58 +5.42472455236( + ) 0.7599+ 0.75 86.679146(14.67+15.3 )122532125 57.814.2515.75 + 54721 50% (1 + )27123612+ + + 2009 18.5(8.5+9.3)435

11、670871 ( ) 3 72( )+10 12.18(3.18321695124.23)0.65201 0.20.2550.4 0.8412.52.53 3.67+6 0.33 100542( ) 45( )265616575321( + ) 857 1.98.578085.7291435( + + + + )24 320.1250.50.2521346125.14+4.925% 7 (2 2.3) 103.625.3815413+ + + + + + 7.83.3+7.87.77.82160314256 2 + 9 995515871591解方程3(x5)=8.4 3x x= 4x25%x

12、=18.75213X: =0.07: 8.2 x=4 =7521531x52+ =9 x:15= : x x=215x45138X: = : 69 x=26.8 : =8:x1403221316+ x=35 (1+20%)x =0.4 6.832%x=4x83 523x+4 =5 x:2.4=5: 75%x =8551418X0.85x=3 5x20%x=19.2 :25%= :x876514:x=0.4: 0.4x+x=153.8 x x=2.1379 3251:x= : 2:2 =x:5 4.83x=94328215412x8x=20 12(0.5x1)=4 40%x14=72= 1.25

13、: =x:2.4 x+ x1=65x8.036414361:x=1 :2 4x2.5x=0.75 8(x2)=2x+75141x: =4:7 x25%x=12.67328 (1 + ) 3.932.6+39.30.7445220% +20% + 60%40%( )91855420110 (8.8 )+ ( + )12175472127157560%+24 +0.6 0.25 + 25%+5383541( )532 ( + ) 1016754132 ( + 50%) ( )107257164154.40.25 7.259.9+72.5% ( + ) 152368.50.9+8.50.1 28.9

14、2.55+1.17.453.81.01 ( )(1.60.4) 4930.4 253.751347.0998+7.092 49 3.75 9.7+ + +6.625411038273.644+4.360.25 18.2511.811.817.257.54.2(1 ) (2 + )(2+ )61131164 12 + 4173 157168 (60%+2 ) 1.7 15.95(5.9510)510974897 37.5%+1040.375 25 5 4.2583 8434.5( 37.5)3 97 ( + )2153965318552.61.8318.17 67.50.39+3.253.9 (

15、1 ) 1.253.850.00817521073.89.9+0.38 0.627(3.83+6.17)( + ) 56.96(19.55+6.96)2763174( ) 53199 3 5.2+4.8 48294 511651739.843+39.838+3981.9 8.765.292.71+1.24 ( ) 3694167445326112 20% 0.25120.954312.68(2.684.5) 1.015.25.20.01( ) (5.65.60.7)22.4 7340.51.2540.8 + 736573( ) 15.283.999.01764215+9 +99 +999 +9

16、999 4.8799+4.8754540.5322+5.37.8 + + 9453571632( + )24 + 21345272184.87(2.98+0.87) 80.251.250.4 (1814 ) 2 0.257295 1629(4 ) 72%23910875964 + 34 7 +3.52+2 +5.484144389.343+0.578930 712.50.08解方程或比例1.7+x=24.5 x10=2.5 3.563x=11 52x =96 x =12 =9841654836x310x x= 125%x= :x=2: 213658214x30%x=84 x+8=35 x12=

17、40 5341193(x+2.1)=10.5 :x= :10 x:28%= :0.75418410.5x0.8=10 :x=4: 50.83x=1435x = x 0.5x0.2=50 =654372 x8140.5(x+0.8)=8 27.2x=6.8 x: =43650.2542x=0.8 x:10%=3:20% 7.83x=3.6x = 10:x=2: = 13245472x8.034x8=125 2.1(18x)=4.2 x0.75x=30= x(180%)x=4.9521x44324x=33+13x 3:x=2:5 25%x =3631203:4=x:1.2 6(x1)=3.6 5x 6=7.5418x4=1.6 = 1x=3.0x96127(120%)x=2.4 2x = : =4:x549341.20.4x=12 (x0.6)10=9.5 =x.0258.1.5x+20%x=5.95 :x=2.1: 17120%x=5871587(x1.2)=2.1 = x2.20.5=2.2 x98.0443看图列式计算20 万元21?元比甲车贵 10%甲车乙车列式计算:25 万件?万件A 产品B 产品比 A 多 25%列式计算:?件棉绒衫:50 件

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