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Count Back from 20 is a free printable Kindergarten maths worksheet on reversing the count sequence, aligned to Common Core standard K.CC.A.2. It prints 8 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two pupils in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

Set 1 of 25 · the same problems every time you open this link.

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One paper per pupil

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All 25 sets ask different questions.

Count Back from 20

K.CC.A.2

NameDate

Write the missing numbers.

1.20181615
2.20171615
3.15141210
4.15141110
5.1412119
6.1412109
7.15131110
8.16141311

LessonPrint · K.CC.A.2 · Set 1 · free to copy for classroom use

Answer key — Count Back from 20

Set 1. Prints on its own sheet.

  1. 1.19, 17
  2. 2.19, 18
  3. 3.13, 11
  4. 4.13, 12
  5. 5.13, 10
  6. 6.13, 11
  7. 7.14, 12
  8. 8.15, 12

Questions about Count Back from 20

What does the Count Back from 20 worksheet cover?

It practises reversing the count sequence — 8 questions for Kindergarten, all on Common Core K.CC.A.2: Start counting from any number, not just from one. The instruction to pupils is “Write the missing numbers”, and the answer key follows on the next sheet.

Which Common Core standard does Count Back from 20 practise?

CCSS.MATH.CONTENT.K.CC.A.2 — K.CC.A.2, in the Counting & Cardinality domain for Kindergarten. The published standard reads: “Count forward beginning from a given number within the known sequence (instead of having to begin at 1).” The worksheet assesses that standard rather than a paraphrase of it.

What age or grade is this worksheet for?

Count Back from 20 is written for Kindergarten, typically ages 5-6. It is one of the sheets on K.CC.A.2, so it suits any pupil working at that standard — including older pupils revisiting it and younger ones working ahead.

Does Count Back from 20 come with an answer key?

Yes. All 8 answers are generated from the same problems as the questions, so the key cannot drift out of step with the sheet. It starts on a fresh sheet of paper, after the questions, so it is not handed out with the class by accident.

How many different versions of Count Back from 20 can I print?

25 — one per pupil, and all 25 ask different questions. Set 1 downloads the whole class as a single PDF. Every version is fixed to its own address, so a sheet printed today holds the same problems when you reopen it next week.

Is Count Back from 20 free to print and photocopy?

Yes. Count Back from 20, its answer key and its 25 versions are free to print and photocopy for your own class, with no account, no email capture and no subscription at the download step. Please do not resell them or republish them as your own.

More practice for K.CC.A.2

Start counting from any number, not just from one.

All Kindergarten worksheets

Last reviewed 2026-09-05. Aligned to K.CC.A.2 of the Common Core State Standards for mathematics.