问题
解答题
递等式计算(能简算的要简便计算).
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答案
①3.6÷(3.6+1.2)
=3.6÷4.8
=0.75
②26.18÷(5.2-3.5)+0.06
=26.18÷1.7+0.06
=15.4+0.06
=15.46
③(31.6-11.7)÷2.5÷0.4
=19.9÷(2.5×0.4)
=19.9
④[11÷(1-0.8)]÷0.1
=[11÷0.2]÷0.1
=55÷0.1
=550
⑤20.12×48-201.2×1.4+2012×0.66
=20.12×48-20.12×14+20.12×66
=20.12×(48-14+66)
=20.12×100
=2012