|
|  |
|
かけざんは、すうじを ” ばい ” にしていく計算(けいさん)です。
” × ” のきごうをつかいます。 |
 |
|
|
|
| 2 |
× |
1 |
= |
2 |
| に |
|
いち |
が |
に |
 |
が |
1こ |
= |
 |
|
| 2 |
× |
2 |
= |
4 |
| に |
|
に |
が |
し |
 |
が |
2こ |
= |
  |
|
| 2 |
× |
3 |
= |
6 |
| に |
|
さん |
が |
ろく |
 |
が |
3こ |
= |
   |
|
| 2 |
× |
4 |
= |
8 |
| に |
|
し |
が |
はち |
 |
が |
4こ |
= |
    |
|
| 2 |
× |
5 |
= |
10 |
| に |
|
ご |
|
じゅう |
 |
が |
5こ |
= |
     |
|
| 2 |
× |
6 |
= |
12 |
| に |
|
ろく |
|
じゅうに |
 |
が |
6こ |
= |
    
 |
|
| 2 |
× |
7 |
= |
14 |
| に |
|
しち |
|
じゅうし |
 |
が |
7こ |
= |
    
  |
|
| 2 |
× |
8 |
= |
16 |
| に |
|
は |
|
じゅうろく |
 |
が |
8こ |
= |
    
   |
|
| 2 |
× |
9 |
= |
18 |
| に |
|
く |
|
じゅうはち |
 |
が |
9こ |
= |
    
    |
|
|
|