2021/1/14
笔算乘法
谁是神算子。
第第11组组
322 × 24
1288 644
1
7728
第第22组组
11 44 55 × × 3 22 377 1015
1
290
3915
第3组
6 77 99 × 13
22
2037 679
1
8827
P50、1
第4组
第4组 2 8 6 ×2 84 363 5
×1 43 35 0 21 858 1
• 14、Thank you very much for taking me with you on that splendid outing to London. It was the first time that I had seen the Tower or any of the other famous sights. If I'd gone alone, I couldn't have seen nearly as much, because I wouldn't have known my way about.
1
P49
145 × 12
1
2 90 1 45
1
1740
三位数乘两位数:
列竖式时相同数位要(对齐 ) 先用两位数( 个 )位上的数 乘( 三位数 ),积的末位与 竖式个位对齐,再用两位数 ( 十 )位上的数乘(三位数) 积的末位与竖式十位对齐, 最后把两次得的积(相加)。
2021/1/14
笔算乘法
智慧城堡
145×2=
(元)
答:一套福娃145元, 2套要( )元。
2021/1/14