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Adding Doubles Plus 1


A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Overview

Once you are familiar with Adding Doubles, we can use this strategy to help us understand the concept of Adding Doubles Plus 1.

Let’s quickly review adding doubles.

When you add two of the SAME number, you are adding with DOUBLES FACTS.

1 + 1 and 2 + 2 are both doubles facts.
Look at the example below:

5 + 5 = 10 is a doubles fact. Knowing your doubles facts can help you to remember other addition problems.

Now, how can we use this knowledge to help us solve certain addition problems? Let’s take a look at a special addition problem below. 

3 + 4 =

We are working with 3 + 4, and this is special because we can use the adding double facts and plus 1 to it.

For example, we know that 3 + 3 = 6, so 3 + 4 must have a sum that is one more.

Therefore,

3 + 4 = 7

Doubles facts are easy to remember. Look at the pattern below.

Let’s try a few doubles plus 1 facts! Use the pictures to help you solve.

4 + 5 =

4 + 4 = 8, so 4 + 5 = 9

 

6 + 7 =

6 + 6 = 12, so 6 + 7 = 13

 

5 + 6 =

5 + 5 = 10, so 5 + 6 = 11

 

2 + 3 =

2 + 2 = 4, so 2 + 3 = 5

Remembering the doubles facts can help you with other math problems too!

See Related Worksheets:
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Doubles-Minus-One with Robot Dog
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Robot Basketball Player Scores Twice Minus One
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Somehow this basketball-playing robot always scores one fewer than double points! Students will add doubles, t...
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Three Fly Guys' Number-Detectives' Agency
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Have an addition or subtraction problem that's "bugging" you? These three Fly Guy Detectives are who you shoul...
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Crawling Up the Doubles Tree
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These creepy-crawlies love doubles plus two addition problems! Students will get some great practice matching ...

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Practice Question 1

Use the adding doubles plus 1 strategy to solve questions 1 through 5.

7 + 8 =

Practice Question 2

3 + 4 =

Practice Question 3

8 + 9 =

Practice Question 4

5 + 6 =

Practice Question 5

4 + 5 =

See Related Worksheets:
1st grade
Doubles-Minus-One with Robot Dog
Worksheets
 (0)
Kids will "gear" up for math greatness with this worksheet! There are ten problems on this worksheet. While th...
1st grade
Robot Basketball Player Scores Twice Minus One
Worksheets
 (0)
Somehow this basketball-playing robot always scores one fewer than double points! Students will add doubles, t...
1st grade
Three Fly Guys' Number-Detectives' Agency
Worksheets
 (0)
Have an addition or subtraction problem that's "bugging" you? These three Fly Guy Detectives are who you shoul...
1st grade
Crawling Up the Doubles Tree
Worksheets
 (0)
These creepy-crawlies love doubles plus two addition problems! Students will get some great practice matching ...

Try ArgoPrep for FREE

Learn more Try ArgoPrep for FREE

Share good content with friends and get 15% discount for 12-month subscription

Share in facebook Share in twitter
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