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脱式计算 1.58÷ [20%(15.4+6.7)]

=1.58÷(20-22.1) =1.58÷(-2.1) =-79/105

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÷...

3.28 × 5.7 +6.72 × 5.7 2.1 × 99 +2.1 1.7 × 9.9 + 0.17 23 × 0.1 + 2.3 × 9.9 7.3 ÷4 + 2.7 × 0.25 0.58 ×1.3 ÷ 0.58 ×1.3 0.18+4.26-0.18+4.26 3.75× 0.5 - 2.75 ÷ 2 5.26 × 0.125 + 2.74 ÷ 8 9.5 ÷(1.9 × 8) 12.8 ÷ (0.4 × 1.6...

(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.

100/2×﹙100+1﹚

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)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.

4.15+3.24+9.85+6.76 =4.15+9.85+3.24+6.76 =14+10 =24

(1)45.55-(6.82+15.55) (2)34.52-17.87-12.23(3)6.43-(1.4-0.57) (4)23.75-8.64-3.46(5)17.83-9.5-7.83-0.5 (6)5.38+88.2-2.38+1.8(7)27.38-5.34+2.62-4.66 (8)21.63-(8.5+9.63) (9)7.5-2.45+7.5+2.45 (10)0.9+0.99+0....

(1)8.82×15-100=132.3-100=32.3;(2)15.8- 7 18 +14.2- 11 18 =(15.8+14.2)-( 7 18 + 11 18 )=30-1=29;(3)21.6-0.8×4÷0.8×4=21.6-3.2÷0.8×4=21.6-4×4=21.6-16=5.6;(4)3 3 5 ×3.7+3.6+5.3×3 3 5 =3 3 5 ×3.7+3 3 5 ×1+5.3×3 3 5 =...

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