计算：（1+）×（1+）×（1+）×…×（1+）．
直接写出得数．0.8+99+0.8=1÷5+=÷25%×=（﹣）×24=5×÷5×=
口算．①7.25+0.84= ②= ③1﹣0.62= ④5÷5%=
18.7﹣3.375﹣6.625．
0.05+=
直接写出得数①=②=③0.1+99×0.1=④=⑤=⑥=
）×（1+
）×（1+
）×…×（1+
）．
=
÷25%×
=
﹣
= ③1﹣0.62= ④5÷5%=
=
=
=
=
=
=
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