Counting and Writing Numbers to 120 — Answer Key
Part A: Fill in the Missing Number
Write the missing number on each line.
1. 12, 13, 14, 15, 16.
Counting by 1s from 13 gives 14.
2. 27, 28, 29, 30, 31.
Counting by 1s from 29 gives 30.
3. 44, 45, 46, 47, 48.
Counting by 1s from 45 gives 46.
4. 53, 54, 55, 56, 57.
Counting by 1s from 53 gives 54.
5. 68, 69, 70, 71, 72.
Counting by 1s from 70 gives 71.
6. 81, 82, 83, 84, 85.
Counting by 1s, the number before 82 is 81.
7. 90, 91, 92, 93, 94.
Counting by 1s from 92 gives 93.
8. 35, 36, 37, 38, 39.
Counting by 1s from 36 gives 37.
Part B: True or False?
Circle True or False for each statement.
1. The number 50 comes right after 49.
True False
True. When counting by 1s, 50 comes right after 49.
2. The number 77 comes before 76.
True False
False. 77 comes after 76, not before it.
3. When you count, 64 comes right after 63.
True False
True. Counting by 1s, 64 comes right after 63.
4. The number 40 comes right before 39.
True False
False. 40 comes after 39, not before it.
5. 88 comes right after 87.
True False
True. Counting by 1s, 88 comes right after 87.