| Objects | How many? |
|---|---|
| ๐๐๐๐๐ | |
| ๐ค๐ค๐ค๐ค๐ค๐ค๐ค๐ค๐ค | |
| ๐ป๐ป๐ป๐ป๐ป๐ป๐ป๐ป๐ป๐ป๐ป๐ป๐ป | |
| ๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐ | |
| ๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐ |
| Before | Number | After |
|---|---|---|
| 6 | ||
| 13 | ||
| 25 | ||
| 9 | ||
| 18 |
| Number | < = > | Number |
|---|---|---|
| 3 | 7 | |
| 11 | 11 | |
| 14 | 9 | |
| 17 | 19 | |
| 6 | 6 | |
| 18 | 12 |
Count by 2s: 10, 12, , 16, , 20, , 24, , 28
Count by 5s: 15, 20, , 30, , 40, , 50, , 60
Count by 10s: 20, 30, , 50, , 70, , 90, , 110