“巧思妙算”﹣﹣用你喜欢的方法计算．
①450÷18×30+375 ②6.75×2.4+4.25×2.4﹣2.4
③（0.75+0.2）÷0.25×25% ④
×〔
﹣（
﹣
）〕
“巧思妙算”﹣﹣用你喜欢的方法计算．
①450÷18×30+375 ②6.75×2.4+4.25×2.4﹣2.4
③（0.75+0.2）÷0.25×25% ④×〔﹣（﹣）〕
÷
表示
= 7×
=
=
×6÷
=
×
=
×16=
÷2=（
）×16=．
=
=
= 902=
= 8：10=
=
×12=
=
=
=
÷7= 1÷
= 12÷
=
+3÷
=
÷3= 6×
=
+
= 30÷
=
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