Skip Counting by 2s, 5s, 10s to 120 — Answer Key
Part A: Fill in the Blank
Write the missing word or number on each line.
1. 2, 4, 6, 8, 10, 12
The pattern jumps by 2, so after 6 we add 2 more to get 8.
2. 10, 20, 30, 40, 50
Each number grows by 10, and 30 sits exactly between 20 and 40.
3. 5, 10, 15, 20, 25
Counting by 5s from 20, we add one more 5 and reach 25.
4. 60, 70, 80, 90, 100
This is counting by 10s, so the number between 80 and 100 has to be 90.
5. 30, 35, 40, 45, 50
Each step adds 5, so 45 plus 5 equals 50.
6. 14, 16, 18, 20, 22
Counting by 2s, 18 plus 2 gives us 20, which comes right before 22.
7. 80, 90, 100, 110, 120
The pattern jumps by 10, so between 90 and 110 the missing number is 100.
8. 55, 60, 65, 70, 75
Each number grows by 5, so 65 plus 5 equals 70.
9. 16, 18, 20, 22, 24
Counting by 2s, we add 2 to 22 to get 24 — the next even number.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
Count by 2s from 6
→ 8, 10, 12
8, 10, 12
Count by 5s from 35
→ 40, 45, 50
40, 45, 50
Count by 10s from 40
→ 50, 60, 70
50, 60, 70
Count by 2s from 18
→ 20, 22, 24
20, 22, 24
For each match, add the jump size again and again: starting at 6 and adding 2 gives 8, 10, 12, while starting at 35 and adding 5 gives 40, 45, 50.