五年级数学下册《小数的简便运算必考易错题》，开学提分必备！
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简介
1.加法结合律 3.29+0.73+2.27 =3.29+(0.73+2.27) =3.29+3 =6.29 2.减法的性质 3.29-0.73-2.27 =3.29-(0.73+2.27) =3.29-3 =0.29 3.减法的性质 7.32-(3.32+2.5) =7.32-3.32-2.5 =4-2.5 =1.5 4.减法交换律 7.35-3.25-3.35 =7.35-3.35-3.25 =4-3.25 =0.75
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