Lesson Worksheet: Adding Tens on a Number Line Mathematics • 1st Grade

In this worksheet, we will practice adding multiples of ten to a two-digit number using a number line with numbers up to 100.

Q1:

Adding multiples of 10 is easy with a number line.

Make two jumps of 10 to find the answer: 27+20=.

Q2:

We can use a number line to find the sum of 14+10.

Start at 14 and jump 10.

Fill in the blank: 14+10=.

Q3:

Adding multiples of 10 is easy with a number line.

46+30=

Q4:

Find 30 more than 49.

Fill in the blank: 49+30=.

Q5:

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

Q6:

Use a number line to find 50 more than 22.

Hint: Count in tens.

Q7:

Use the number line to calculate 90+10.

Q8:

Use the number line to work out 15+30.

Q9:

Which of the following equations describes the given number line?

  • A5520=35
  • B35+20=55
  • C35+25=55

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