用边长为3分米的正方形砖铺地，需500块；现在改用长5分米，宽3分米的长方形砖铺同一块地，需要多少块？
口算我最棒= 26×======= 6.4÷20%= 125%×8=
直接写出得数．×= 1÷=÷60%=×15=﹣= 4.5+=×= 6.8÷10%=
直接写得数 24×= 72×= 12÷=÷3= 0÷=3÷=×=﹣×0=
口算×15=×2=×=×=÷=÷3=÷5=÷=
画一画． （1）= （2）÷4=
= 26×
=
=
=
=
=
=
= 6.4÷20%= 125%×8=
×
= 1÷
=
÷60%=
×15=
﹣
×
= 6.8÷10%=
= 72×
= 12÷
=
÷3=
=3÷
=
×
=
×0=
×15=
×2=
×
=
×
=
÷
=
÷3=
÷5=
÷
=
=
÷4=
粤公网安备 44130202000953号