Free printable practice
Subtract 1Digit Within 20 Practice Activities
Printable preschool and kindergarten subtraction activities help children subtract 1-digit numbers from totals up to 20 using pictures, counters, and number sense.
Practice that builds confidence
What this skill builds
Children practise subtracting a 1-digit number from numbers up to 20, building the idea of taking away, finding what is left, and counting back. The activities fit preschool and kindergarten learners who are ready to move beyond very small subtraction facts.
These printable worksheets include visual subtraction, number sentences, and simple fact practice within 20. Children may use drawings, counters, fingers, ten-frames, or a number line before writing answers independently.
Subtracting 1-digit numbers within 20 helps children connect real actions to written math. A problem such as 14 - 6 means start with 14, take away 6, and find the amount left. Learners practise vocabulary including subtract, minus, take away, difference, left, and equals. Because the starting numbers can be larger than 10, children also begin to see how teen numbers are made from a ten and some more.
Progression in the worksheets
The practice can begin with picture-based tasks, such as crossing out apples or counting objects that remain. It then moves toward equations like 12 - 3 = __ and mixed pages where children decide how to solve. Some children will count back one step at a time, while others may use known facts, such as 10 - 4 = 6, to solve 13 - 4 by thinking 10 - 4 plus 3 more.
Parent routine for home practice
Choose a small group of facts rather than a full page at once. Give your child 15 counters, buttons, or cereal pieces and say, "Start with 15. Take away 7. How many are left?" Ask the child to show the action first, then match it to the written sentence 15 - 7 = 8. End by asking, "How do you know?" so the answer is supported by counting, objects, or a strategy.
Classroom uses for teachers
Teachers can use these printables for subtraction centers, morning review, small-group reteaching, or independent practice after a hands-on lesson. Pages with visual support are helpful for learners who still need concrete models, while equation-only items can be used to check fluency with facts within 20. Pairing a worksheet with cubes or a number line keeps the task accessible.
Common errors to watch for
Some children subtract the smaller digit from the larger digit without thinking about the whole number, especially with teen numbers. Others count the starting number as the first count-back step, saying 14, 13, 12 for 14 - 3 and answering 12 instead of 11. Watch for reversed equations, skipped counts, and answers that are larger than the starting number.
Free printable PDF download
Use this subtract 1 digit within 20 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
The iBloom activities keep the range focused: subtract a 1-digit number from totals within 20. That clear boundary lets children practise enough examples to notice patterns without becoming overwhelmed. A child-friendly strategy is: "Start big, hop back the minus number, then check what you land on."
Helpful answers
Frequently asked questions
What does subtract 1-digit within 20 mean?
It means the starting number is 20 or less and the number being subtracted is a single digit, such as 16 - 7 or 12 - 4.
Should my child use fingers or counters for these worksheets?
Yes. Preschool and kindergarten children often need objects, fingers, drawings, or a number line before they can solve subtraction facts mentally.
How can I help with teen-number subtraction?
Build the starting number with counters or a ten-frame first. Show the ten and the extra ones, then take away the 1-digit number and count what remains.
What mistake is most common in subtracting within 20?
A common mistake is counting back incorrectly by including the starting number as the first step. For 14 - 3, the count-back steps are 13, 12, 11.
Are these worksheets better for preschool or kindergarten?
They can work for both. Preschoolers may use the most visual pages with objects, while kindergarten children can move toward written number sentences within 20.
Is this subtract 1 digit within 20 worksheet free?
Yes. You can preview it for free and use the printable worksheet for home or classroom practice.
Can I download this subtract 1 digit within 20 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 subtract 1 digit within 20 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.