小学四年级500道口算题

如题所述

500道四年级口算

138-89= 5400÷54= 200×34= 550-450= 18000÷600= 2700÷30=

45×14= 18万+24万= 89÷100= 0.82+0.08= 73×1= 0.63×10=

4÷10= 17÷1000= 0.56+0.4= 80×25= 1-0.93= 1.25×100=

5.6+99= 100÷25= 90-0.9= 41×100= 8800÷400= 0.12×10=

600÷30= 7.59÷100= 150+70= 356-98= 125×8= 612÷6=

12×80= 1.5×100= 840÷40= 0.125×100= 8÷100= 2.3+3.6=

0.28+0.12= 7.3+2.7= 7.5-3.4= 1-0.35= 3.6÷10= 5.6+2.3+0.7=

5×17×2= 154-73-27= 1000×25= 24×0÷12= 7.06×100= 7.6÷10=

2.5×10= 65.8÷100= 91.05÷1000= 300÷15= 0.05×1000= 14×60=

5400÷600= 345+298=
0.5+0.4= 0.9-0.3=

0.35+0.43= 2.8-1.2= 0.81-0.19= 9.7-7= 7.8+2.2= 1-0.37= 310×5×2=

4×(25+50)= 32.8+19= 0.51÷17= 240÷30= 1000×0.8= 3.06+0.2=

8×125= 0.67+1.24= 7-6.28= 8.2-0.01= 99×23= 50×4=

5÷1000= 0.42+9.5= 10×0.5= 65×25×4= 0.08÷100= 1.82-0.63=

4.5+1.5= 1-0.63= 231-99= 3.7+2.5= 32+268=
1.3-0.7 = 2.4+0.6 =

7×99+7= 24-19+24+19= 7.5-2.8= 5.5-3.2= 120÷6÷2= 9100÷70=
4×(36-25)= 1-0.2= 4.3+1.5= 300-84-16= 2-1.1 = 145-99=

102×5= 3.5×60= 3.12+5.2= 11.3-8.6= 0.23×400= 0.59+0.22=

60÷0.5= 2-0.29= 457+198= 756-197= 45+15-45+15= 5.4-2.5-1.4=

0.36÷1.2= 5×3.3×0.2= 5.5×3= 14.5+9.5= 400÷25÷8= 7÷1.4=
416÷8= 2.1÷30= 1.25×3×8= 0.9-0.26= 821-202= 0.25÷50=

30.2×5= 125×16= 7×(10+0.5)= (0.18+0.9)÷9= 16.4-(3.5+6.4)= 8.3÷2.5÷0.4=

0.6+0.6×99= (0.88+0.16)÷8= 12.6+5.3+6.4= 9.6÷0.4÷5= 6×1.4+6×4.6= 0.8÷(0.4×0.2)=

13.6÷8+10.4÷8= 0.74÷0.001= 5.4-2.5-1.4= 2-0.35-0.65= 6.4+1.07-0.47=

1.5-0.04= 420÷35= 0.49+0.61= 2.4×0.2= 0.64÷0.16= 55×80=

11.7+2.3= 735-298= 810÷27= 10-8.25= 3200÷400= 360÷120=

1.29-0.18= 15×(100+3)= 0.6+5.47= 36+54= 7000÷200= 398+294=

500-12= 250×40= 125×800= 97-59= 64×4= 998-299=
240×400= 54-15= 140×7= 299+455= 15×60= 9100÷700=

900÷50= 17+49= 25+68= 542-298= 152-46= 620-290=

100-79= 860-370= 0÷38= 670-540= 894-399= 68×101=

19×40= 47×4= 95-64= 40×19= 95×2= 590+30=

1100÷50= 83-25= 997+674= 3200÷200= 4200÷30= 5500÷500=

44×6= 71-17= 900÷60= 60-52= 60-36= 7+75=

10000÷50= 500-27= 6600÷110= 91-23= 22×50= 0×346=

125×32= 21×500= 1250×4= 439+61= 392+208= 188+702=

15×400= 200-47= 289-98= 66+25= 239+42= 65×50=

65×2= 5×45= 650÷13= 740÷370= 75×40= 140÷30=

9600÷3200= 2×95= 200-104= 15+97= 58÷2= 72÷4=

1000-37= 6000÷150= 101+52= 47-19= 540×5= 740×6=

20000÷500= 28×300= 25×12= 43×50= 530-250= 600÷120=

185-86= 90÷6= 700-7= 120+390= 64+36-58= 40×38×25=

2×96×5= (18+25)×4= 7×125+125= 100×7+7= 90-69+27= 410-350-20=

25×(100+2)= 95×(100-1)= 7×(40+7)= 645-(500-1)= 870-130-150= 53-38-14=

19×6+11×6= 827-59-241= 678-372-28= 17+15+18= 5000+4000-300=

310+260+420= 28×3+16÷4= (120-30×2)÷4= (30×5+30)×5= 420×18+580+180=

75÷(18+14-27)= 900÷6- 520÷40= 60-60÷(4×3)= 87÷(20+30-47)= 90+90÷(48÷8)=

65÷5+3×9= 8.2+0.54+0.46= 6400÷200= 250×8= 3.9+2.03= 250-160=

560÷40= 8×27×125= 12×700= 1-0.2= (180+20)÷5= 2÷1000=

1260÷30= 7×19+7= 25×18= 14.5÷100= (150+50)×8= 490÷35=

14.5÷100= 42×8×4= 272-97= 1.29-0.18= 180÷5÷4= 198+27=

8+0.4= 2.5+3.2= 103×40= (22+78)×7= 160×3= 2.4-1.7=

2.4-1.8= 0.25+0.75= 86.2+15.8= 213÷3= (25+24) ×4= 8-2.5=

175-35= 420-150= 9+0.1= 46+49+51= 174-48-52= 1.05-0.09=
8×(125+50)= 420÷610= 0.6+7.45= 72×4+28×4= 200÷8= 20-19.7=

89÷100= 73×1= 0.82+0.08= 0.63×10= 4÷10= 17÷1000=

0.56+0.4= 1.25×100= 5.6+99= 100÷25= 1-0.93= 5×2=

4×(25+50)= 90-0.9= 5400÷600= 7.6÷10= 7.06×100= 345+298=

2.5×10= 65.8÷100= 91.05÷1000= 300÷15= 0.05×1000= 14×60=

0.81-0.19= 1-0.37= 0.5+0.4= 0.9-0.3= 0.35+0.43= 2.8-1.2=

9.7-7= 7.8+2.2= 5.8-5= 6.7+3= 40×60= 840 ÷21=

24×50= 1-0.08= 621-199= 7.8+2.2= 750-260= 360+640=

12-1.46-0.54= 5.6+2.3+0.7= 8800÷800= 110×600= 25×6= 30×270=

90÷15= 175—75= 57亿+13亿= 61万-25万= 1144÷102= 320—168=

40×23×5= 9×125×8= 430—270= 376-198= 2.5+3.2= 9.9—4.8=

8—0.72= 0.25+0.75= 38×19÷38= 780÷30= 25×4= 400×5=

12×200= 60×25= 300×15= 900÷30= 84÷7= 53×5=

640÷40= 960÷60= 42×50= 0.6-0.47= 25×8= 1-0.06=

0.8+4.7= 0.75×100= 5.6÷100×10= 4÷10= 0.08 +1.22= 45万+256万=

7.4×1000= 4×(25×7)= 17÷1000= 720÷60= 1-0.93= 7×800=

760-450= 310+48= 240+160= 90×60= 670-500= 76万+19万=

98-49= 410-203= 230万-70万= 82万-54万= 320+60= 860-47=

720÷30= 7×9÷7×9= 430+190= 510÷30= 340+270= 72÷18=

90÷15= 720÷12= 0÷578= 38+90= 130×50= 380-56=
580-410= 196+68= 18万+23万= 1000-620= 410-203= 0÷578=

38+90= 7×9÷7×9= 84万-48万= 64万+34万= 7200÷8= 96÷16=98-49=

340+270= 72÷18= 90÷15= 720÷12= 125×24= 720÷48=

630÷45÷2= 299+435= 260-98= 25×24×5= 3.7+2.5= 120÷6÷2=

960÷48= 431+199= 362-103= 360÷8÷5= 25×32= 720÷48=

5.5-3.2= 40+30×20= 1.3-0.7= 2.4+0.6= 7×99+7= 4.3+1.5=

300-84-16= 2-1.1= 7.5-2.8= 4×(36-25)=
90÷6=

13×101-13= 6×4×5×5= 650÷5+80= 64+36+5= 60×30=

8×7+56= 300÷3÷5= 420-(420-300)= 24-19+24+19= (59+21)×(72÷6)=

125+125+125+125+125+125+125+125=
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第1个回答  2009-08-08
120-36×4÷18+35 (58+37)÷(64-9×5) (6.8-6.8×0.55)÷8.5 0.12× 4.8÷0.12×4.8 (3.2×1.5+2.5)÷1.6 6-1.6÷4= 5.38+7.85-5.37= 7.2÷0.8-1.2×5= 6-1.19×3-0.43= 6.5×(4.8-1.2×4)= 5.8×(3.87-0.13)+4.2×3.74 32.52-(6+9.728÷3.2)×2.5 [(7.1-5.6)×0.9-1.15] ÷2.5 5.4÷[2.6×(3.7-2.9)+0.62] 12×6÷(12-7.2)-6 12×6÷7.2-6 0.68×1.9+0.32×1.9 58+370)÷(64-45) 420+580-64×21÷28 136+6×(65-345÷23) 18.1+(3-0.299÷0.23)×1 (6.8-6.8×0.55)÷8.5 0.12× 4.8÷0.12×4.8 (3.2×1.5+2.5)÷1.6 3.2×6+(1.5+2.5)÷1.6 0.68×1.9+0.32×1.9 10.15-10.75×0.4-5.7 5.8×(3.87-0.13)+4.2×3.74 32.52-(6+9.728÷3.2)×2.5 [(7.1-5.6)×0.9-1.15] ÷2.5 5.4÷[2.6×(3.7-2.9)+0.62] 12×6÷(12-7.2)-6 12×6÷7.2-6 33.02-(148.4-90.85)÷2.5 (25%-695%120-36×4÷18+35 (58+37)÷(64-9×5) (6.8-6.8×0.55)÷8.5 0.12× 4.8÷0.12×4.8 (3.2×1.5+2.5)÷1.6 6-1.6÷4= 5.38+7.85-5.37= 7.2÷0.8-1.2×5= 6-1.19×3-0.43= 6.5×(4.8-1.2×4)= 5.8×(3.87-0.13)+4.2×3.74 32.52-(6+9.728÷3.2)×2.5 [(7.1-5.6)×0.9-1.15] ÷2.5 5.4÷[2.6×(3.7-2.9)+0.62] 12×6÷(12-7.2)-6 12×6÷7.2-6 0.68×1.9+0.32×1.9 58+370)÷(64-45) 420+580-64×21÷28 136+6×(65-345÷23) 18.1+(3-0.299÷0.23)×1 (6.8-6.8×0.55)÷8.5 0.12× 4.8÷0.12×4.8 (3.2×1.5+2.5)÷1.6 3.2×6+(1.5+2.5)÷1.6 0.68×1.9+0.32×1.9 10.15-10.75×0.4-5.7 5.8×(3.87-0.13)+4.2×3.74 32.52-(6+9.728÷3.2)×2.5 [(7.1-5.6)×0.9-1.15] ÷2.5 5.4÷[2.6×(3.7-2.9)+0.62] 12×6÷(12-7.2)-6 12×6÷7.2-6 33.02-(148.4-90.85)÷2.5 (25%-695%-12%)*36 -12%)*36 9.9+3+0.1=(9.9+0.1)+3=10+39.9*12+9.9*88=9.9*(12+88)=9.9*100=990
6.9+4.8+3.1 0.456+6.22+3.78
4.02+5.4+0.98 5.17-1.8-3.2
7.85+2.34-0.85+4.66 3.82+2.9+0.18+9.1 7.14-0.53-2.47
0.398+0.36+3.64 15.75+3.59-0.59+14.25
66.86-8.66-1.34 0.25×16.2×4 3.72×3.5+6.28×3.5 36.8-3.9-6.1
15.6×13.1-15.6-15.6×2.1 4.8×7.8+78×0.52 32+4.9-0.9
4.8×100.1 56.5×9.9+56.5 7.09×10.8-0.8×7.09
25.48-(9.4-0.52) 4.2÷3.5 320÷1.25÷8
18.76×9.9+18.76 3.52÷2.5÷0.4 3.9-4.1+6.1-5.9
5.6÷3.5 9.6÷0.8÷0.4 4.2×99+4.2
17.8÷(1.78×4) 0.49÷1.4 1.25×2.5×32 3.65×10.1
15.2÷0.25÷4 0.89×100.1
3.83×4.56+3.83×5.44 4.36×12.5×8 9.7×99+9.7
27.5×3.7-7.5×3.7 8.54÷2.5÷0.4 0.65×101 3.2×0.25×12.5
(45.9-32.7)÷8÷0.125 3.14×0.68+31.4×0.032 5.6÷1.25÷0.8÷2.5÷0.4
7.2×0.2+2.4×1.4 8.9×1.01 7.74×(2.8-1.3)+1.5×2.26
3.9×2.7+3.9×7.3 18-1.8÷0.125÷0.8 12.7×9.9+1.27
21×(9.3-3.7)-5.6 15.02-6.8-1.02 5.4×11-5.4
2.3×16+2.3×23+2.3 9.43-(6.28-1.57) 3.65×4.7-36.5×0.37
46×57+23×86 13.7×0.25-3.7÷4 2.22×9.9+6.66×6.7
101×0.87-0.91×87 10.7×16.1-15.1×10.7 0.79×199
4.8+8.63+5.2+0.37 5.93+0.19+2.81 1.76+0.195+3.24
2.35+1.713+0.287+7.65 1.57+0.245+7.43 6.02+3.6+1.98
0.134+2.66+0.866 1.27+3.9+0.73+16.1 7.5+4.9-6.5
3.07-0.38-1.62 1.29+3.7+2.71+6.3 8-2.45-1.55
3.25+1.79-0.59+1.75 23.4-0.8-13.4-7.2 0.32×403
3.2+0.36+4.8+1.64 1.23+3.4-0.23+6.6 0.25×36
12.7-(3.7+0.84) 36.54-1.76-4.54 0.25×0.73×4
7.6×0.8+0.2×7.6 0.85×199 0.25×8.5×4
1.28×8.6+0.72×8.6 12.5×0.96×0.8 10.4-9.6×0.35
0.8×(4.3×1.25) 3.12+3.12×99 28.6×101-28.6
0.86×15.7-0.86×14.7 2.4×102 2.31×1.2×0.5
14-7.32-2.68 2.64+8.67+7.36+11.33 70÷28
(2.5-0.25)×0.4 9.16×1.5-0.5×9.16 3.6-3.6×0.5
4.5÷1.8 4.2÷3.5 930÷0.6÷5
63.4÷2.5÷0.4 4.9÷1.4 3.9÷(1.3×5)
(7.7+1.54)÷0.7 2.5×2.4 2.7÷45 15÷(0.15×0.4)
0.35×1.25×2×0.8 32.4×0.9+0.1×32.4 15÷0.25 120-36×4÷18+35 (58+37)÷(64-9×5) (6.8-6.8×0.55)÷8.5 0.12× 4.8÷0.12×4.8 (3.2×1.5+2.5)÷1.6 6-1.6÷4= 5.38+7.85-5.37= 7.2÷0.8-1.2×5= 6-1.19×3-0.43= 6.5×(4.8-1.2×4)= 5.8×(3.87-0.13)+4.2×3.74 32.52-(6+9.728÷3.2)×2.5 [(7.1-5.6)×0.9-1.15] ÷2.5 5.4÷[2.6×(3.7-2.9)+0.62] 12×6÷(12-7.2)-6 12×6÷7.2-6 0.68×1.9+0.32×1.9 58+370)÷(64-45) 420+580-64×21÷28 136+6×(65-345÷23) 18.1+(3-0.299÷0.23)×1 (6.8-6.8×0.55)÷8.5 0.12× 4.8÷0.12×4.8 (3.2×1.5+2.5)÷1.6 3.2×6+(1.5+2.5)÷1.6 0.68×1.9+0.32×1.9 10.15-10.75×0.4-5.7 5.8×(3.87-0.13)+4.2×3.74 32.52-(6+9.728÷3.2)×2.5 [(7.1-5.6)×0.9-1.15] ÷2.5 5.4÷[2.6×(3.7-2.9)+0.62] 12×6÷(12-7.2)-6 12×6÷7.2-6 33.02-(148.4-90.85)÷2.5 (25%-695%120-36×4÷18+35 (58+37)÷(64-9×5) (6.8-6.8×0.55)÷8.5 0.12× 4.8÷0.12×4.8 (3.2×1.5+2.5)÷1.6 6-1.6÷4= 5.38+7.85-5.37= 7.2÷0.8-1.2×5= 6-1.19×3-0.43= 6.5×(4.8-1.2×4)=
第2个回答  2009-07-28
570÷3= 900÷6= 700÷8= 24×30= 10×380= 0+900= 745×3= 376+128= 495-389= 356÷8= 150×5= 500×30=

630×3= 648÷9= 16-32÷8= 9×8+8= 7+5×4= 460×3= 460÷5= 504÷3= 440÷40= 380×2= 680÷20= 15×50= 46×20= 860÷40= 138÷3= 291÷7= 352÷4= 960÷80=

840÷7= 16×200= 700×40= 25×30= 714÷7= 95÷5= 384÷3= 13×6×3= 320×4= 865-169= 376-287= 534+436= 623-237= 356+153= 430-257= 168+439= 378+536= 251-147= 346-147= 254-176= 80×6×5= 42×20= 30×27= 20×25= 50×12= 12×25= 60×50= 304÷76×76= 576÷8×8= 125-25×2= 45+55÷5= 70×(40-32)= 90÷5×3= 100÷10×30= 6×(103-98)= 7+13×0= 960-512= 81+99= 568÷9= 101×60= 62×40= 50×23= 81-4×6÷3= 230×4= 309×50 =

59×60= 400÷( 13-5)= 72-20÷5= 120÷(2+4)= 12×8÷6= 99-36÷6= 72-12÷6= 950-600= 690-590= 450-390= 150+80= 450÷3= 147+225= 70×9÷30= 50×50÷(25×2)=

4200÷(35×2)= 63÷9+133= 55×2÷5= 40×7+4×45=

0.7+0.9= 3.25+0.75= 14.6-0.4= 10-0.1= 14+0.78= 1-0.3= 5-0.08= 1.1-1= 1.64+2.35= 8.34-6.22= 12.6+3.4= 2.1+0.2= 0.3+0.7= 3.6+1.6= 7.5-0.5= 3.7-0.9= 2.13-0.02= 3.51+0.2= 102+0.3= 1.12-1.02= 4.5-0.01=

10-7.64= 13.88-6.29= 0.99+1.1= 100.2-2.28= 13.6+8.46= 12.6+7.43= 249 ×70=

27.3+73.2+72.7 = 585+189+215 = 5.85-1.75-0.25=

768-274-126 = 5.85+1.89+2.15= 24.8+14.6+15.4=

42.5-22.17-7.83= 3.8+1.37+6.2+12.63 =
检举200×30=
42×4=
63-7=
230×20=
130×3=
60×50=
150÷3=
260×2=
75-26=
21×40=
35×20=
15×80=
300×6=
15×8=
23×30=
51÷3=
60÷60=
80÷5=
240÷80=
100÷50=
1200÷20=
250÷50=
270÷90=
50÷10=
360÷40=
500÷50=
280÷70=
34×2=
15×5=
490÷70=
21×3=
15×6=
120÷60=
25×4=
14×5=
480÷80=
30×60=
1800÷60=
25×40=
1800÷90=
5×17=
48÷3=
90×6=
1400×5=
12×8=
92÷2=
150×4=
560÷80=
72÷24=
3200×2=
24×20=
70÷14=
28×3=
6×13=
650÷5=
900÷6=
10×47=
91÷13=
450÷50=
12×20=
18×2=
84÷3=
1900×5=
720÷4=
50×70=
480÷80=
26×30=
93÷31=
18×4=
74÷37=
210÷30=
36×20=
4×250=
120÷20=
160×2=
480÷2=
50×60=
48÷4=
76÷19=
18×3=
6×800=
110×8=
250÷50=
130×5=
400÷8=
420÷3=
90-15=
3×24=
92÷46=
48+16=
11×40=
360÷60=
76÷19=
18×3=
6×800=
110×8=
250÷50=
130×5=
400÷8=
420÷3=
3200×2=
24×20=
70÷14=
28×3=
6×13=
650÷5=
900÷6=
10×47=
91÷13=
450÷50=
12×20=
18×2=
84÷3=
1900×5=
720÷4=
50×70=
480÷80=
26×30=
93÷31=
18×4=
74÷37=
210÷30=
36×20=
4×250=
120÷20=
160×2=
480÷2=
50×60=
48÷4=
76÷19=
18×3=
6×800=
110×8=
250÷50=
130×5=
400÷8=
420÷3=
90-15=
3×24=
92÷46=
48+16=
11×40=
360÷60=
160×2=
480÷2=
50×60=
48÷4=
76÷19=
18×3=
6×800=
110×8=
250÷50=
130×5=
400÷8=
420÷3=
90-15=
3×24=
92÷46=
8.1÷9=
2.5×4=
6-0.025=
3.6+6.3=
0.05×4=
3.5×0=
0÷3.5=
0.9×0.3=
1×0.06=
9×0.5=
1.25×8=
2.6×3=
4.1×2=
0.35×0.2=
7.5×0.1=
0.9×0.3=
1×0.06=
9×0.5=
1.25×8=
0.2×0.4=
8.2+1.8=
100-35.22=
2.5×0.4=
2.4×5=
0.22×4=
0.9-0.52=
3.99×1=
0×3.52=
2.5÷5=
8.4÷7=
0.34÷17=
2.5÷0.5=
8.4÷0.7=
0.34÷0.17=
30.4÷4=
1.2×6=
0.72÷0.6=
2.6÷1.3=
0.6×0.3=
0÷3.65=
7.82÷1 =
0.001÷0.1=
1.4÷0.7=
3.6÷0.06=
5.6÷0.8=
5.6÷1.4=
0.48÷0.8=
4.4÷0.11=
4.2×3 =
3.2×0.4=
0.3÷0.01=
4÷0.5=
5.1÷0.17=
0.28÷1.4=
0.9÷0.45=
9.6÷16=
1÷0.01 =
0.01÷1=
7.5÷1.5=
0.81÷9=
3÷0.5=
10÷25=
4.8÷0.16=
0÷3.89=
3.52÷1=
6.4÷4=
1.5÷0.3=
1.8×5=
7.2÷0.9=
2.2×6=
8.4÷0.4=
4.5÷0.9=
2.5×4=
12.5×4=
0.3÷0.1=
4.5×2=
7.8+0.22=
3.4×0.4=
12.6-0.9=
48+16=
11×40=
91 - 52 = ( ) 96 - 20 = ( ) 38 - 30 = ( ) 33 - 5 = ( ) 49 - 30 = ( ) 48 - 2 = ( ) 69 + 24 = ( ) 50 - 34 = ( ) 49 + 41 = ( ) 97 - 59 = ( ) 64 - 36 = ( ) 30 + 12 = ( ) 62 + 3 = ( ) 44 + 56 = ( ) 27 + 48 = ( ) 54 - 40 = ( ) 22 + 17 = ( ) 43 - 38 = ( ) 69 - 5 = ( ) 8 + 86 = ( ) 91 - 88 = ( ) 94 - 56 = ( ) 82 - 61 = ( ) 42 + 23 = ( ) 81 - 26 = ( ) 7 + 67 = ( ) 35 + 61 = ( ) 87 - 52 = ( ) 55 + 4 = ( ) 11 + 15 = ( ) 98 - 74 = ( ) 91 - 74 = ( ) 39 - 35 = ( ) 91 - 3 = ( ) 8 + 28 = ( ) 45 + 25 = ( ) 27 + 72 = ( ) 98 - 94 = ( ) 25 + 39 = ( ) 92 - 13 = ( ) 68 - 30 = ( ) 97 - 94 = ( ) 71 - 14 = ( ) 16 + 38 = ( ) 19 + 65 = ( ) 82 - 60 = ( ) 77 + 8 = ( ) 44 - 34 = ( ) 60 - 60 = ( ) 5 + 9 = ( ) 55 + 35 = ( ) 68 - 63 = ( ) 11 + 65 = ( ) 37 + 6 = ( ) 54 + 32 = ( ) 85 - 17 = ( ) 54 + 11 = ( ) 57 - 28 = ( ) 74 + 4 = ( ) 89 - 54 = ( ) 57 - 57 = ( ) 32 - 23 = ( ) 91 - 9 = ( ) 85 - 57 = ( ) 23 - 10 = ( ) 88 - 41 = ( ) 8 + 13 = ( ) 90 - 75 = ( ) 41 + 16 = ( ) 34 + 10 = ( ) 28 - 25 = ( ) 94 - 50 = ( ) 78 - 12 = ( ) 29 + 53 = ( ) 79 - 45 = ( ) 53 + 2 = ( ) 36 + 64 = ( ) 3 + 81 = ( ) 58 - 20 = ( ) 73 + 26 = ( ) 39 + 1 = ( ) 87 - 63 = ( ) 28 + 24 = ( ) 12 + 22 = ( ) 80 + 6 = ( ) 41 - 11 = ( ) 64 + 8 = ( ) 15 + 19 = ( ) 33 + 2 = ( ) 22 + 50 = ( ) 3 + 46 = ( ) 72 - 19 = ( ) 98 - 86 = ( ) 74 - 53 = ( ) 87 - 76 = ( ) 44 - 39 = ( ) 89 + 8 = ( ) 94 - 79 = ( ) 11 + 5 = ( ) 92 - 40 = ( )
第3个回答  2009-07-28
640÷80= 15×5= 23×3= 12×2×5=
480÷80= 16×5= 27×3= 90÷15=
48÷4= 640÷16= 39÷3= 24×20=
32×3= 48÷16= 12×8= 27×3=
56÷14= 24÷8= 14×2= 83-45=
560÷80= 96÷24= 40÷20= 40×30=
37+26= 76-39= 605+59= 30×23=
12×8= 27+32= 48+27= 4500×20=
73+15 = 120×600 = 200×360= 6800×400=
280+270= 4×2500= 6000÷40= 5×1280=
310-70= 400×14= 470+180= 1000÷25=
160×600= 20×420= 290×300= 8100÷300=
7600÷200= 7600÷400= 680+270= 980÷14=
4200÷30= 6×1300= 1300×50= 200×48=
930-660= 530+280= 9200÷400= 840÷21=
180×500= 8000÷500 = 1900÷20= 200×160=
8700÷300= 300×330= 3×1400= 7000÷14=
600÷12= 9600÷80= 140×300= 8800÷40=
9600÷800= 750-290= 5×490= 760×20=
7500÷500= 370×200= 650÷13= 8600-4200=
2.8×0.4= 1.12
14-7.4=6.6,
1.92÷0.04=48,
0.32×500=160,
0.65+4.35= 5
10-5.4=4.6,
4÷20=0.2,
3.5×200=700,
1.5-0.06=1.44
0.75÷15=0.05,
0.4×0.8=0.32,
4×0.25=1,
0.36+1.54=2
1.01×99=99.99,
420÷35=12,
25×12=300,
135÷0.5=270
3/4 + 1/4 =1,
2 + 4/9 =22/9,
3 - 2/3 =7/3,
3/4 - 1/2= 1/4
1/6 + 1/2 -1/6 =1/2,
7.5-(2.5+3.8)=1.2,
7/8 + 3/8 =5/4
3/10 +1/5 =1/2,
4/5 - 7/10 =1/10,
2 - 1/6 -1/3 =1.5
0.51÷17=0.03,
32.8+19=51.8,
5.2÷1.3=4,
1.6×0.4= 0.64
4.9×0.7=3.43,
1÷5=0.2,
6÷12=0.5,
0.87-0.49=0.38

1.(1+1/2)(1+1/3)(1+1/4)......(1+1/100)
2.(1-1/2)(1-1/3)(1-1/4)......(1-1/100)
3.8+2-8+2
4.25*4/25*4
5.7.26-(5.26-1.5)
6.286+198
7.314-202
8.526+301
9.223-99
10.6.25+3.85-2.125+3.875
11.9-2456*21
12.0.5/11.5-4*2.75
13.1/2×3/5
14.3.375+5.75+2.25+6.625
15.1001-9036÷18
16.3.8×5.25+14.5
17.2.1*4.3+5.7*2.1
18.30×1/3
19.102*45-328
20.2/3×12
21.2.8*3.1+17.6/8
22.3/5×5/6
23.(50-12.5)/2.5
24.2/5×1/3
25.6110*47+639
26.1/2-1/6
27.3.5*2.7-52.2/18
28.1/7×1/5
29.3.375*0.97+0.97*6.625
30.25×4/5
31.6.54+2.4+3.46+0.6
32.5/6-1/2
33.95.6*1.8+95.6*8.2
34.1/2×1/5
35.600-420/12
36.344/3.6-5.4*0.25
37.16/2+30/2+90/6
38.3001-1998.
39.5000-105*34
40.0.15/0.25+0.75*1.2
41.(1/2+1/3+1/4)*0.24
42.(25+4)*4
43.300-4263/21
44.0.81/0.25+5.96
45.403÷13×27
46.1.5×4.2-0.75÷0.25
47.3.27×4 +3.27×5.7
48.(1.2+ 1.8)×4.51025-768÷32
49.0.25×80-0.45÷0.9
50.1025-768÷32
51.0.25*2.69*4
52.2348+275*16
53.2/9*15/8-1/12*9/5
54.2.4+2.4*(5.375-3.375)
55.645-45*12
56.0.15+1.2/0.24-0.45
57.3.75-(2.35+0.25/1.25)
58.76*1/4+23*25/100+0.25
59.10-2.87-7.13
60.0.96+9.6*9.9
61.7.5-5.7*1/3
62.12.37-3.25-6.75
63.16*6.8+2.2*16+16
64.401*19+284
65.58.7-16.65/3.7
66.0.4*4.7*2.5+(2.3+5.3)
67.9.31-1.125-7.875
68.640+128*45
69.8.2*1.6-0.336/4.2
70.400*(0.62+0.08)

2/1*2=1
3/1*3=1
3/2*3=2
3/1*6=2
4/3*8=6
5/3*20=12
7/3*14=6
8/7*40=35
4/3*16=12
9/5*27=15
2/1*30=15
12/7*24=14
30/1*30=1
51/9*102=18
19/9*76=36
4/9*8=18
5/8*90=144
99/98*99=98
3/14*6=28
7/1*28=4
10/1*90=9
5/3*105=63
19/7*38=14
5/1*25=5
8/19*16=38
61/60*122=120
7/2*28=8 6/1*48=8
9/7*18=14
25/7*100=28
9/5*81=45
8/9*16=18
2/1*2=1
3/1*3=1
3/2*3=2
3/1*6=2
4/3*8=6
5/3*20=12
7/3*14=6
8/7*40=35
4/3*16=12
9/5*27=15
2/1*30=15
12/7*24=14
30/1*30=1
51/9*102=18
19/9*76=36
4/9*8=18
5/8*90=144
99/98*99=98
3/14*6=28
7/1*28=4
10/1*90=9
5/3*105=63
19/7*38=14
5/1*25=5
8/19*16=38
61/60*122=120
7/2*28=8
6/1*48=8
9/7*18=14
25/7*100=28
9/5*81=45
8/9*16=18
12÷3/5=12×(5/3)
9÷6/7=9×( 7/6 )
30÷5/6=30×(6/5 )
4×(3/2 )=4÷2/3
4÷5/7=4×7/5
3÷4/5=3×5/4
24÷7/16=24×(16/7 )
A÷C/B=A×B/C
4÷4/5=5
6÷3/4=8
10÷2/5=25
18÷4/9=81/2
4×4/5=16/5
6×3/4=18/4
10×2/5=4
18×4/9=8
3÷3/4=4
2÷1/3=6
6÷4/5=15/2
1÷5/7=7/5
3/4÷3=1/4
1/3÷2=1/6
4/5÷6=2/15
5/7÷1=5/7
2/1*2=1
3/1*3=1
3/2*3=2
3/1*6=2
4/3*8=6
5/3*20=12
7/3*14=6
8/7*40=35
4/3*16=12
9/5*27=15
2/1*30=15
12/7*24=14
30/1*30=1
51/9*102=18
19/9*76=36
4/9*8=18
5/8*90=144
99/98*99=98
3/14*6=28
7/1*28=4
10/1*90=9
5/3*105=63
19/7*38=14
5/1*25=5
8/19*16=38
61/60*122=120
7/2*28=8
6/1*48=8
9/7*18=14
25/7*100=28
9/5*81=45
8/9*16=18
第4个回答  2009-07-28
要口算题;是平时必须背下的。

11---100的平方。必须背下。

2----50的立方。必须背下。

2----20的能整除的数的规律。必须记下

能除25和125的数的规律。(包括不能整除)

11--100的快速算法。

。。。。这些就够你背一个月的。两个月熟练掌握就很伟大。

只你要过了这关 。初中高中计算比别人快。且准确。

相关了解……

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