Skip Counting by 2s, 5s, 10s to 120 — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. What comes next? 84, 86, 88, ___
A) 89
B) 90
C) 92
D) 94
The correct answer is B) 90 — the pattern jumps by 2, and 88 plus 2 equals 90.
2. Skip count by 5s: 95, 100, 105, ___
A) 108
B) 115
C) 110
D) 120
The correct answer is C) 110 — add 5 to 105 and you reach 110, which keeps the count-by-5s pattern going.
3. Skip count by 10s: 70, 80, 90, ___
A) 95
B) 110
C) 105
D) 100
The correct answer is D) 100 — counting by 10s from 90 means adding one more ten to land on 100.
4. Which number is missing? 36, 38, ___, 42
A) 39
B) 41
C) 40
D) 44
The correct answer is C) 40 — the gap jumps by 2, and 40 is the even number between 38 and 42.
Part B: Fill in the Blank
Write the correct answer on each line.
1. 96, 98, 100, 102, 104
The numbers jump by 2, so 100 plus 2 equals 102 — notice that 102 is just past the big 100.
2. 50, 60, 70, 80, 90
Counting by 10s, 80 plus 10 gives us 90, which is one jump closer to 100.
3. 85, 90, 95, 100, 105
Each step adds 5, so 95 plus 5 lands exactly on 100.
4. 106, 108, 110, 112, 114
The pattern jumps by 2, so 108 plus 2 gives 110 — the even number between 108 and 112.
5. 90, 100, 110, 120
Counting by 10s from 110, we add one more ten and reach 120, which is as far as Grade 1 counting goes.