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. 10, 12, 14, 16, 18
Counting by 2s, add 2 to 14 and you get 16, which sits between 14 and 18.
2. 40, 50, 60, 70, 80
Each jump adds 10, so the number between 60 and 80 is 70.
3. 15, 20, 25, 30, 35
Counting by 5s from 30, we add one more 5 and reach 35.
4. 90, 100, 110, 120
The pattern adds 10 each time, so after 110 the next number is 120 — the biggest number we count to in Grade 1.
5. 5, 10, 15, 20, 25
Counting by 5s, 10 plus 5 equals 15, which comes right before 20.
6. 4, 6, 8, 10, 12
Each step adds 2, so 10 plus 2 gives us 12.
7. 50, 55, 60, 65, 70
Counting by 5s, 60 plus 5 makes 65, which fits between 60 and 70.
8. 20, 22, 24, 26, 28
The pattern jumps by 2, so 22 plus 2 lands us on 24.
9. 70, 80, 90, 100, 110
Each number grows by 10, so after 100 we add 10 more and reach 110.
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 10s from 50
→ 60, 70, 80
60, 70, 80
Count by 5s from 75
→ 80, 85, 90
80, 85, 90
Count by 2s from 22
→ 24, 26, 28
24, 26, 28
Count by 10s from 80
→ 90, 100, 110
90, 100, 110
Each match adds the same jump three times: starting at 50 and adding 10 gives 60, 70, 80, while starting at 22 and adding 2 gives the even numbers 24, 26, 28.