Missing Numbers 1 to 20 Worksheets for Kids

📄 Printable WorksheetsAge 5-6EasyNumbers 🇺🇸 Kindergarten 🇬🇧 Year 1 🇦🇺 Foundation (Prep)🇮🇳 UKG 📐 K.CC.A.2 📐 K.CC.A.3

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These free printable worksheets help children practise counting and writing numbers from 1 to 20. Each page shows a number line, a caterpillar track or a grid with a few numbers missing. Your child reads the numbers that are there, works out what comes next, and writes the missing number in the empty box.

The pages move from easy to slightly harder, so beginners can start with 1 to 10 and move on to 20 when they feel ready. Print as many copies as you like for home practice, preschool class work or quiet-time activities.

How to play

Download the worksheet and print the pages on A4 paper. One page per day is plenty for young learners.
Ask your child to read the numbers aloud from left to right, touching each one with a finger.
At every empty box, stop and ask, "Which number comes next?" Then let your child write it in the box.
Check the page together and count from 1 to 20 aloud as a happy finish.

While filling these worksheets, your child practises counting forward from any number, not just from one. This is an important early maths skill that later supports addition, skip counting and place value. Writing each missing number also builds pencil control and correct number formation, so digits like 6, 9 and 12 become neat and easy to read. Saying the numbers aloud strengthens number-word order and listening skills. Keep sessions short and cheerful, about ten minutes at a time, and praise effort rather than speed. If a number is tricky, count together from 1 using fingers or objects before writing the answer.

Frequently asked questions

What age are these missing number worksheets for?

They suit children aged about four to six who already recognise numbers 1 to 10. Younger children can start with the first page only, while older children can finish all pages up to 20 on their own.

Are these worksheets really free to print?

Yes. You can download the PDF and print as many copies as you need for your home or classroom. Teachers often print one set per child and keep a spare page for extra practice later in the week.

What should I do if my child gets stuck?

Count aloud together from one, pointing at each number on the page until you reach the empty box. A number line on the wall or counting fingers also helps. Confidence grows quickly with gentle, repeated practice.

How often should my child use these pages?

One page a day, or three to four pages a week, works well. Short regular practice of about ten minutes helps children remember number order better than one long session at the weekend.