Adding Doubles Worksheets for 1st Grade
Add a number to itself (e.g. 6 + 6), from 1 + 1 to 10 + 10, plus doubles of tens like 30 + 30. 15 free printable worksheets, each with an answer key.
Save to PinterestFree Adding Doubles Worksheets
Click a worksheet to open the PDF, or grab the matching answer key. Every sheet prints on one page.
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Adding Doubles: what children learn
"Doubles" facts (like 6 + 6) are worth memorizing on their own because they're easy to picture and, once known cold, become a shortcut for solving nearby facts (like 6 + 7 = double-6 plus one more). Doubles of tens (30 + 30) use the same fact: 3 + 3 = 6, so 30 + 30 = 60.
Adding Doubles: worked example
6 + 6 = 12
Six plus six is twelve — this is a "doubles fact," worth memorizing directly rather than counting on.
Adding Doubles: a common mistake to watch for
Kids sometimes still count on by ones for doubles facts even after they'd benefit from just memorizing them — timed doubles-only practice helps build that instant recall.
Adding Doubles: how to help at home or in class
Use a muffin tin with two rows of cups. Put the same number of beans in each row, then count the total together. Chant doubles in rhythm, like a song, and look for them around the house: two shoes, two hands with five fingers each. Throw a single die and ask your child to say the double right away. When doubles up to 10 plus 10 come to mind instantly, they will be a handy shortcut for near doubles.
What is on these Adding Doubles worksheets
This set has 15 different worksheets for 1st grade, with 11 questions on each and a matching answer key for every sheet. The instruction printed on each worksheet is: “Add the doubles and write the sum.”
Example questions like the ones on these worksheets, with their answers:
- 10 + 10 =20
- 40 + 40 =80
- 2 + 2 =4
- 5 + 5 =10
- 20 + 20 =40
- 3 + 3 =6
- 9 + 9 =18
- 1 + 1 =2
Every answer on every sheet is checked by a separate program before the worksheet is published. How we check answers