Worksheet: Adding Numbers up to 20 on a Number Line

In this worksheet, we will practice adding within 20 by jumping forward in ones on a number line.

Q1:

Use the number line to complete the following addition sentence.

Q2:

On this number line, Jennifer started at 13 and counted forward until she reached 18.

Which number sentence describes what Jennifer did?

  • A 1 3 + 5 = 1 8
  • B 1 8 4 = 1 4
  • C 1 3 + 3 = 1 8
  • D 1 3 + 1 = 1 8
  • E 1 8 5 = 1 3

Q3:

I start at a number and count forward. Does this represent adding or subtracting?

  • Aadding
  • Bsubtracting

Q4:

Count on to add.

Find the total.

  • A16
  • B15
  • C14

Q5:

Count on to add.

Find the total.

Q6:

Victoria was playing a game. First, she moved her counter 4 spaces forward. Then, she moved it 7 spaces forward.

How many spaces from the start is her counter?

Q7:

On this number line, Sophia started at 4 and counted forward three.

Which of the following describes what Sophia did?

  • AShe added four.
  • BShe added three.
  • CShe added seven.
  • DShe took away three.
  • EShe took away seven.

Q8:

Find the number sentence that matches this number line.

  • A3 + 4 = 8
  • B8 − 4 = 4
  • C3 + 5 = 8
  • D8 − 5 = 3
  • E3 + 3 = 8

Q9:

Fill in the missing number.

Use the number line if you need to.

Q10:

Fill in the missing number.

Use the number line if you need to.

Q11:

Fill in the missing number.

Use the number line if you need to.

Q12:

To find the sum of 11+6, we can use a number line.

  • Start at 11
  • Count on 6
  • Land on 17

So, we now know that 11+6=17.

Use a number line to find the sum of 13+6.

Q13:

Count on to add.

Amelia started this calculation on a number line. Finish the calculation to find the total.

Q14:

Count on to add.

Find the total.

  • A13
  • B14
  • C12

Q15:

Consider the following figure.

What sum does this diagram represent?

  • A 2 + ( 8 ) = 6
  • B 2 + ( 4 ) = 2
  • C 2 + 6 = 8
  • D 2 + ( 6 ) = 4
  • E 2 + 4 = 6

What is the distance between the first addend (2) and the sum?

  • A | 8 |
  • B | 6 |
  • C | 2 |
  • D | 4 |

Q16:

We can add numbers on number lines by thinking about length.

Noah took a bar of length 13 and added a bar of length 6. Read how he showed this on the number line.

Write an addition equation to show what he did.

  • A 1 3 6 = 7
  • B 1 3 + 6 = 1 8
  • C 1 3 + 6 = 1 9

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