Lesson Worksheet: Doubles Plus One Mathematics • 1st Grade

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In this worksheet, we will practice adding two consecutive numbers with sums up to 20 by finding one more than a doubles fact.

Q1:

Use

to find

Q2:

Notice that 4 is one more than 3.

So the answer to 3+4 is one more than the answer to 3+3.

If 3+3=6, which of the following is equal to 3+4?

  • A3+4+4
  • B6+4
  • C6+1

Q3:

Olivia was asked to solve 8+9.

She wrote

Is her solution correct?

  • ANo
  • BYes

Q4:

Jennifer tried to solve 6+7 by using the doubling numbers facts, but she got the answer wrong.

Her teacher circled the mistake in her answer. Help her by finding 6+7.

Q5:

Complete the following:

  • A
  • B
  • C
  • D

Q6:

Complete the following addition sentence:

Q7:

Find the missing number.

Q8:

Jacob wants to solve 4+5.

Which double fact can help him find the answer?

  • A
  • B
  • C

What is the result?

Q9:

Use 5+5=10 to find the total number of players on a football team by solving 5+6.

Q10:

Consider the following.

Find the missing number.

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