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简便计算500

500×61 =500×(60+1) =500×60+500×1 =30000+500 =30500

500÷40的简便计算 =50÷4 =12.5

解:采用分配律, 500x61 =500x(60+1) =500x60+500 =30000+500 =30500

36×45+36×56-36 66×93+93×33+93 99×32 46×25 36×45+36×56-36 66×93+93×33+93 97+89+11 88×102 125×88 26+47+174 85+47+15+53 815+49+65+14+11 72×125 18+77+40+23+48 71+73+69+74+68+70+69 123×64+123×36 39×4×5 125×6×...

500除以28用托式简便计算 =500÷4÷7 =125÷7 =125/7

500÷(25×2) =500÷50 =10

解:原式=500+300+6 =800+6 =806 此题用了a+b+c=a+c+b的公式

就是把括号打开,把顺序调整一下就可以了。500/5=100,再去除以370

500÷25×4用简便运算 500÷25×4 =5*100/25*4 =5*4*4 =20*4 =80

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 + (...

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