72.19+6.48+27.81-1.38-5.48-0.62=?(简便运算)
2个回答
72.19+6.48+27.81-1.38-5.48-0.62
=72.19+27.81+6.48-1.38-5.48-0.62
=100+5.1-(5.48+0.62)
=105.1-6.1
=99
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直接写出得数:88+12=,99-19=,62-26=,38+49=,37÷6=,81÷9=,8×7=,9×5=,48÷
13.5-(3.75+6.48)简便运算
9.72-3.38-0.62 简便算法
用竖式计算36+27=62-27=47+29=51-27=43-38=27+34=63-26=48-38=