Free printable practice
Adding Doubles Plus 1 Practice Activities
Printable maths drill worksheets that help children use known doubles facts to solve near-double addition facts such as 6 + 7 and 8 + 9.
Practice that builds confidence
What children learn
These Adding Doubles Plus 1 practice activities help children see that two neighbouring numbers can be added by using a doubles fact they already know. For example, 5 + 6 becomes 5 + 5 + 1, so the answer is just one more than the double.
The printable worksheets in this Mathematics > Math Drills > Addition Facts collection give repeated, focused practice with near doubles. Children build speed, accuracy, and confidence while learning to explain the strategy rather than counting every number.
Adding doubles plus 1 is a mental maths strategy for addition facts with consecutive addends, such as 3 + 4, 6 + 7, or 8 + 9. Children first recall the double of the smaller number, then add 1. This strengthens fact fluency because they connect new facts to familiar doubles instead of treating every sum as separate.
How the practice progresses
The activities are designed for short, purposeful drill within Addition Facts practice. Children may meet facts in rows, mixed practice sets, or simple equation formats. The focus stays on recognising the pattern: one addend is exactly 1 more than the other. As children practise, they move from thinking 7 + 7 = 14, so 7 + 8 = 15 to answering smoothly.
Parent routine at home
Choose a small set of facts and ask your child to circle the smaller addend before solving. Say the reasoning aloud: double 6 is 12, one more is 13. After a few examples, cover the answers and ask your child to explain the strategy for each sum. Keep the tone calm; the aim is accurate recall through understanding, not guessing quickly.
Classroom uses for teachers
Teachers can use these sheets as morning maths, fact-fluency practice, homework, or a quick centre activity. They also work well after a lesson on doubles, because they help pupils extend that knowledge to near doubles. Ask pupils to mark facts that are doubles plus 1 and compare them with true doubles to make the relationship visible.
Common errors to watch for
Some children double the larger number instead of the smaller one and then add 1, which gives an answer that is too high. Others see 4 + 5 and count on by ones even though the near-double pattern is available. Encourage them to check: Are the two numbers next to each other? Which double is easier to use?
Free printable PDF download
Use this adding doubles plus 1 worksheet page to preview the activity, print it, or download it as a PDF for quick practice. It works well for homework, homeschool lessons, tutoring, morning work, revision, and classroom centers.
Answers and answer key support
After the child completes the worksheet independently, parents and teachers can use the answer support or answer key information to check the work, review mistakes, and choose the next practice step.
Why iBloom worksheets help
iBloom worksheets give clean, uncluttered practice so children can concentrate on the exact addition strategy. A child-friendly prompt is: spot neighbours, double the smaller number, add 1. This simple routine turns facts like 2 + 3, 5 + 6, and 9 + 10 into connected facts children can solve with confidence.
Helpful answers
Frequently asked questions
What does doubles plus 1 mean in addition?
It means using a known double to solve a near-double fact. For 6 + 7, a child can think 6 + 6 = 12, then add 1 to get 13.
Which addition facts are best for this strategy?
The strategy works when the two addends are consecutive numbers, such as 2 + 3, 4 + 5, 7 + 8, or 9 + 10.
Should children memorise these facts or explain the strategy?
Both matter, but understanding should come first. When children can explain double the smaller number, then add 1, memorisation becomes more meaningful.
How can I help if my child keeps counting on fingers?
Ask your child to identify whether the numbers are neighbours. Then prompt: What is the double of the smaller number? What is one more?
Can these worksheets be used after learning doubles?
Yes. They are especially useful after doubles practice because they show children how doubles facts help solve nearby addition facts.
Is this adding doubles plus 1 worksheet free?
Yes. You can preview it for free and use the printable worksheet for home or classroom practice.
Can I download this adding doubles plus 1 worksheet as a PDF?
Yes. Use the worksheet download option to save a printable PDF, or print the worksheet directly from the page.
Does this adding doubles plus 1 worksheet include answers or an answer key?
When the activity has fixed answers, iBloom includes answer support so parents and teachers can check the completed worksheet.