Skip Counting by 2s, 5s, 10s to 120 — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. Skip count by 2s: 110, 112, 114, ___
A) 115
B) 118
C) 116
D) 120
The correct answer is C) 116 — counting by 2s from 114 means adding 2 more to reach the next even number.
2. What comes next? 75, 80, 85, ___
A) 95
B) 100
C) 88
D) 90
The correct answer is D) 90 — the pattern adds 5 each time, and 85 plus 5 equals 90.
3. Skip count by 10s: 30, 40, 50, ___
A) 55
B) 65
C) 70
D) 60
The correct answer is D) 60 — each number grows by 10, so 50 plus 10 brings us to 60.
4. Which number is missing? 100, ___, 120
A) 105
B) 115
C) 112
D) 110
The correct answer is D) 110 — the gap jumps by 10, and 110 sits exactly halfway between 100 and 120.
Part B: Fill in the Blank
Write the correct answer on each line.
1. 64, 66, 68, 70, 72
Counting by 2s, 68 plus 2 equals 70 — the next even number in the pattern.
2. 100, 105, 110, 115, 120
Each jump adds 5, so 105 plus 5 equals 110, keeping the count-by-5s pattern going.
3. 40, 50, 60, 70, 80
The numbers jump by 10, so the missing number between 50 and 70 is 60.
4. 112, 114, 116, 118, 120
Counting by 2s, 116 plus 2 gives 118 — the even number right before 120.
5. 60, 70, 80, 90, 100
Each number grows by 10, so 90 plus 10 brings us to 100 — a big round number.