连一连．
46×72 得数比2000大，比2400小
37×55 得数比4000大，比5400小
53×88 得数比2800大，比4000小
29×82 得数比1600大，比2700小．
连一连．
46×72 得数比2000大，比2400小
37×55 得数比4000大，比5400小
53×88 得数比2800大，比4000小
29×82 得数比1600大，比2700小．
×0
×
×12
÷
1÷
÷2
÷
×
×
．
②
×
③12÷
④
÷
．
×
= 2.4÷
= 7﹣
﹣
= 0.24×50%=
÷7=
×37.5%= 1÷
÷1=
÷
=
×
= 1
÷
=
×9+
÷
=
×
= 1﹣
= 7+6.2=
÷1=
÷
=
×
= 2.5×
=
×
=
=
=
=
=
=
=
=
=
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