| Objects | How many? |
|---|---|
| πππππππ | |
| βββββββββ | |
| ππππππππππππ | |
| πΊπΊπΊπΊπΊπΊπΊπΊπΊπΊπΊπΊπΊπΊπΊ | |
| π¦π¦π¦π¦π¦π¦π¦π¦π¦π¦π¦π¦π¦π¦π¦π¦π¦π¦π¦π¦ |
| Before | Number | After |
|---|---|---|
| 5 | ||
| 12 | ||
| 19 | ||
| 8 | ||
| 15 |
| Number | < = > | Number |
|---|---|---|
| 7 | 3 | |
| 5 | 5 | |
| 9 | 14 | |
| 11 | 8 | |
| 16 | 20 | |
| 13 | 13 |
Count by 2s: 2, 4, , 8, , 12, , 16, , 20
Count by 5s: 5, 10, , 20, , 30, , 40, , 50
Count by 10s: 10, 20, , 40, , 60, , 80, , 100