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脱式计算 1.58÷ [20%(15.4+6.7)]

2012年1月28日星期六一、口算题小数加法:0.3+1.5=2.5+9.8=7.6+1.3=4.4+5.7=2.3+7.7=5.7+3.1=7.69+2.31=9.16+2.64=5.68+12.22=16.8+16.5=小数减法:6.8-3.8=4.26-3.71=0.88-2.12=5.34-69.21=68.4-61.5=9.58-3.7=18.94-5.66=15.69-9.78=115-68.59...

简单编了个程序,随机数,随机运算符连缀生成算式,计算结果比较麻烦,还没编明白…… 1) 70+5×4÷55 2) 86-26×19-2 3) 9×95+5-49 4) 4÷87+0+6 5) 82×98÷01÷9 6) 69-51-1-51 7) 6÷6×7×76 8) 2×4÷8×84 9) 9÷9×2÷79 10) 4-0+73+1 11) 18-6+13×6 12) 7×52÷...

(1)480÷6-35,=80-35,=45;(2)40×7+55,=280+55,=335;(3)25×4×8,=(25×4)×8,=100×8,=800,;(4)76-18×4,=76-72,=4;(5)(57+33)÷3,=90÷3,=30;(6)48÷6×15,=8×15,=120.

30.8÷[14-(9.85+1.07)] [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) 2.55×7.1+2.45×7.1 777×9+1111×3 0.8×[15.5-(3.21+5.79)] (31.8+3.2×4)÷5 31.5×4÷(6+3) 0.64×25×7.8+2.2 2÷2.5+2.5÷2 19...

1.4/9× 9/16- 4/3 2. 8/19 × 15/36 + 1/127 3. 121× 5/16 – 2/9 ×3 4. 18× 5/4 + 1/4 5. 16÷ 3/8 – 3/8 ÷6 6. 4/17 × 5/19 + 3/7 × 5/19 7. 5/12 -( 3/2 + 4/5 ) 8. 7/18 + ( 1/18 + 1/9 ) 9. 19 × 5/6 + 5/16 10. 13/14 × 8/19 - 1/3 11. 7...

(1)15.64-2.53-7.47=15.64-(2.53+7.47),=15.64-10,=5.64;(2)3.7+6.3÷0.6-0.4=3.7+10.5-0.4,=13.8;(3)3.5÷[(0.45-0.38)×0.1]=3.5÷[0.07×0.1],=3.5÷0.007,=500;(4)5.6×7.2+4.4×7.2=(5.6+4.4)×7.2,=10×7.2,=72.

1.125*3+125*5+25*3+25 2.9999*3+101*11*(101-92) 3.(23/4-3/4)*(3*6+2) 4. 3/7 × 49/9 - 4/3 5. 8/9 × 15/36 + 1/27 6. 12× 5/6 – 2/9 ×3 7. 8× 5/4 + 1/4 8. 6÷ 3/8 – 3/8 ÷6 9. 4/7 × 5/9 + 3/7 × 5/9 10. 5/2 -( 3/2 + 4/5 ) 11. 7/8 + (...

1.125*3+125*5+25*3+25 2.9999*3+101*11*(101-92) 3.(23/4-3/4)*(3*6+2) 4. 3/7 × 49/9 - 4/3 5. 8/9 × 15/36 + 1/27 6. 12× 5/6 – 2/9 ×3 7. 8× 5/4 + 1/4 8. 6÷ 3/8 – 3/8 ÷6 9. 4/7 × 5/9 + 3/7 × 5/9 10. 5/2 -( 3/2 + 4/5 ) 11. 7/8 + (...

1.125*3+125*5+25*3+25 2.9999*3+101*11*(101-92) 3.(23/4-3/4)*(3*6+2) 4. 3/7 × 49/9 - 4/3 5. 8/9 × 15/36 + 1/27 6. 12× 5/6 – 2/9 ×3 7. 8× 5/4 + 1/4 8. 6÷ 3/8 – 3/8 ÷6 9. 4/7 × 5/9 + 3/7 × 5/9 10. 5/2 -( 3/2 + 4/5 ) 11. 7/8 + (...

1.45+15×6= 135 2.250÷5×8=400 3.6×5÷2×4=60 4.30×3+8=98 5.400÷4+20×5= 200 6.10+12÷3+20=34 7.(80÷20+80)÷4=21 8.70+(100-10×5)=120 9.360÷40+10= 19 10.40×20-200= 600 11.(80-25)*2= 110 12.70+45=115 13.90×2÷3= 60 14.16×6÷3= 32 15.300...

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