简便运算63x88+88x37

答：0.63x2.6+0.37x7.4=0.63x（3-0.4）+（0.4-0.03）x7.4=1.89-0.252+2.96-0.222=2-0.11+3-0.04-0.474=5-0.624=4.376或：0.63x2.6+0.37x7.4=（1-0.37）x2.6+0.37x7.4=2.6+0.37*（7.4-2.6）=2.6+0.37*4.8=2.6+0.37*5-0.37*0.2=2.6+1.85-0.074=2.6+1.776=4.376

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