怎样算简便就怎样算．6.45+1.36﹣6.45+7.64 2.7×（100+2） 9.64﹣7.3﹣0.74.63÷[（9.6+2.2）﹣7.17] 0.5×2.5×4．
列式计算． （1）一个数的是，这个数的是多少？ （2）除与的积，商是多少？
=== 1= 1.2×= 1= 6== 3= 0.9﹣= 0.75+= 24×=
直接写出得数 3×=÷= 18÷=××0=+=×=÷10= 1÷﹣÷1=
直接写得数．×=×3= 0÷=÷=×=×39=×=÷=÷=÷3=
直接写数对又快！==========
是
，这个数的
除
与
的积，商是多少？
=
=
= 1
= 1.2×
= 1
=
=
= 3
= 0.9﹣
= 0.75+
= 24×
=
=
÷
= 18÷
=
×
×0=
+
=
×
=
÷10= 1÷
﹣
×
=
×3= 0÷
=
÷
=
×
=
×39=
×
=
÷
=
÷
=
÷3=
=
=
=
=
=
=
=
=
=
=
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