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22×35+33×7+99用递等式怎么简便运算

将原式的后两项组合,第一项22=20+2. 原式=(20+2)*35+33*7+33*3 =20*35+2*35+33*(7+3) =770+330 =1100

22×35+33×7+99 =11×(2×35+3×7+9) =11×(70+21+9) =11×100 =1100

2014x(78+11x2)=201400 22x35+33x(7+3)=11x(35x2+3x10)=11x100=1100

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