笔算。
$12×26=$
$12×26=$
312
$45×34=$1530
$25×90=$2250
答案
312 1530 2250
一、我会填。

答案
2832 2400 472 2 236 236 10 236 2832 12 236
二、我会算。
$12×7= $
$75×2= $
$12×5= $
$5×140= $
$12×7= $
84
$17×3= $51
$13×9= $117
$75×2= $
150
$15×5= $75
$12×6= $72
$12×5= $
60
$8×45= $360
$33×4= $132
$5×140= $
700
$330×2= $660
$130×5= $650
答案
84 51 117 150 75 72 60 360 132 700 660 650
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