直接写出计算结果
①=
②=
③=
④=⑤0.1252=⑥252÷153=⑦=⑧=
网友回答
解:①,
=2-2,
=0;
②,
=17×(1-),
=17×,
=;
③,
=,
=;
④,
=20.35-0.375,
=19.975;
⑤0.1252,
=0.125×0.125,
=0.015625;
⑥252÷153,
=,
=;
⑦,
=(×)×(98×100),
=×9800,
=;
⑧,
=×23+×23+,
=++,
=++,
=1+,
=1.
解析分析:①②先算乘法,再算减法;
③④按照从左到右的顺序计算;
⑤⑥根据乘方的含义求解;
⑦把除法变成乘法,再运用乘法结合律简算;
⑧先运用乘法分配律简算,再运用加法交换律简算.
点评:本题考查了四则混合运算,注意运算顺序和运算法则,灵活运用所学的运算定律进行简便计算.