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, Elizabeth started at 13 and counted forward until she reached 18.

Which number sentence describes what Elizabeth did?

  • A13+5=18
  • B184=14
  • C13+3=18
  • D13+1=18
  • E185=13

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.

Q5:

Count on to add.

Find the total.

Q6:

Olivia 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.

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

Q14:

Count on to add.

Find the total.

Q15:

Consider the following figure.

What sum does this diagram represent?

  • A2+(8)=6
  • B2+(4)=2
  • C2+6=8
  • D2+(6)=4
  • E2+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.

Anthony 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.

  • A136=7
  • B13+6=18
  • C13+6=19

Q17:

What is 7 plus 4?

Q18:

Write the addition equation.

  • A5+3=2
  • B2+1=5
  • C2+3=5

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