Counting by Ones Worksheet
Practice counting by ones with numbers up to 20, including number lines and fill-in-the-blanks.
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Counting by Ones
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Date:
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Read each question carefully and fill in the correct answers. Remember to count by ones!
1. Count by ones. What comes next?
1, 2, 3, 4, 5, , 7
2. Complete the pattern by counting by ones.
10, 11, 12, , 14, 15
3. Fill in the missing number.
17, 18, , 20
4. Look at the number line. What number is missing?
5. Draw a circle on the number line below to show the number 13.
6. Which number comes right after 8 when counting by ones?
7
9
10
18
7. If you start at 14 and count up by one, what is the next number?
13
15
16
41
8. The number that comes after 19 when counting by ones is 20.
True
False
9. When you count by ones, the number before 6 is 7.
True
False
10. Write the numbers from 1 to 10 by counting by ones.
11. Write the numbers from 11 to 20 by counting by ones.
12. What number comes just before 15 when counting by ones?