小兰家上半年用电426千瓦时，下半年用电比上半年多117千瓦时，小兰家一年一共用电多少千瓦时？
======= 1.05×4= 268÷14×0== 306﹣16= 5.1+0.09=
直接写出得数．﹣=÷= 9÷3= 9.8÷0.7= 3÷×3=÷5=×1.6= 15×60%= 25×40%= 2÷100%=
==== 3.14×5======
直接写出得数． 1﹣40%= ll7%﹣1.02=+40%=﹣24%= 60×15%= 60÷80%=×=÷=
直接写得数． 0.16+0.64= 3﹣0.7= 0.15×4= 1.2÷0.3= 1÷0.1=+=﹣=×=÷= 12÷16=
=
=
=
=
=
=
= 1.05×4= 268÷14×0=
= 306﹣16= 5.1+0.09=
﹣
=
÷
= 9
÷3=
×3=
÷5=
×1.6= 15×60%= 25×40%=
=
=
=
=
=
=
=
=
=
+40%=
﹣24%=
×
=
÷
=
+
=
×
=
粤公网安备 44130202000953号