One More, One Less Worksheets for Kindergarten

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Grade KMathCounting & Number SenseCCSS K.CC.A.2CCSS K.CC.B.4.c

Skill: Writing one more and one less for numbers 1 to 19

Preview of the One More, One Less printable worksheet
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Teaching tips and what to try next

Works for kindergartners who can count to 20 and recognize the written numbers. Lay out a row of small toys matching the middle number, then add or remove one and recount, so the idea feels concrete before it goes on paper. Warm up with More or Less: Compare Numbers 0-10 and follow with Missing Numbers 1-20.

10 versions, each with its own answer key

Same skill and layout, a fresh set of problems in every version, so children can keep practicing without repeating a page. Problems are not repeated between versions unless a skill has only a small number of possible problems (for example, the addition facts within 10).

Download all 10 versions (one PDF)All 10 answer keys (PDF)

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About this worksheet

Knowing which number comes just before and just after another number is a big step in early counting. It shows that a child understands that each number in the counting order is exactly one more than the number before it. This kindergarten worksheet gives twelve quick practice rows for that idea.

Each row shows a number from 1 to 19 in the middle box. Children write the number that is one less in the empty box on the left and the number that is one more in the empty box on the right, so every answer is between 0 and 20. The rows are mixed, so children cannot simply copy a counting pattern from the row above. Across the ten versions, every number from 1 to 19 gets its turn in the middle box, and each version has its own answer key.

How to use it: for one more, ask your child to start at the middle number and count forward one step out loud. For one less, count back one step. A strip of numbers from 0 to 20 on the table, or a row of small toys, makes the idea easy to see: add one toy and count again, then take one away. When a row gives your child trouble, try it with fingers. Many children find one less harder than one more, so give them a little extra time.

The answer key shows both missing numbers for every row. For more counting practice, try our Missing Numbers 1-20 worksheet. To compare two numbers, try our More or Less: Compare Numbers 0-10 worksheet.