Worksheet: Addition of Two-Digit Numbers Using Number Lines

In this worksheet, we will practice adding two-digit multiples of ten to two-digit numbers by making jumps of ten on number lines.

Q1:

Fill in the blank: 4 0 + 5 5 = .

  • A45
  • B59
  • C95

Q2:

Adding multiples of 10 is easy with a number line.

Make two jumps of 10 to find the answer: 2 7 + 2 0 = .

Q3:

Dalia and Yara are making a robot out of blue and yellow blocks. Dalia has counted out 19 blue blocks. Yara says they have 39 blocks in total. How many yellow blocks do they have?

Q4:

What is the missing number 2 1 + = 7 1 ?

Q5:

We can use a number line to find the sum of 1 4 + 1 0 .

Start at 14 and jump 10.

1 4 + 1 0 = ?

Q6:

Adding multiples of 10 is easy with a number line.

4 6 + 3 0 =

Q7:

Find 30 more than 49.

Fill in the blank: 4 9 + 3 0 = .

Q8:

Find 10 more than 62. Use the number line to help you.

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