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Counting by Tens to 100 is a free printable Kindergarten maths worksheet on the decade sequence from ten, aligned to Common Core standard K.CC.A.1. 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.

Counting by Tens to 100

K.CC.A.1

NameDate

Write the missing numbers.

1.102030406070100
2.102030607090100
3.103040507080100
4.103040506070100
5.102050608090100
6.104050607080100
7.102030508090100
8.102050607080100

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

Answer key — Counting by Tens to 100

Set 1. Prints on its own sheet.

  1. 1.50, 80, 90
  2. 2.40, 50, 80
  3. 3.20, 60, 90
  4. 4.20, 80, 90
  5. 5.30, 40, 70
  6. 6.20, 30, 90
  7. 7.40, 60, 70
  8. 8.30, 40, 90

Questions about Counting by Tens to 100

What does the Counting by Tens to 100 worksheet cover?

It practises the decade sequence from ten — 8 questions for Kindergarten, all on Common Core K.CC.A.1: Count all the way to 100, both one at a time and in tens. The instruction to pupils is “Write the missing numbers”, and the answer key follows on the next sheet.

Which Common Core standard does Counting by Tens to 100 practise?

CCSS.MATH.CONTENT.K.CC.A.1 — K.CC.A.1, in the Counting & Cardinality domain for Kindergarten. The published standard reads: “Count to 100 by ones and by tens.” The worksheet assesses that standard rather than a paraphrase of it.

What age or grade is this worksheet for?

Counting by Tens to 100 is written for Kindergarten, typically ages 5-6. It is one of the sheets on K.CC.A.1, so it suits any pupil working at that standard — including older pupils revisiting it and younger ones working ahead.

Does Counting by Tens to 100 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 Counting by Tens to 100 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 Counting by Tens to 100 free to print and photocopy?

Yes. Counting by Tens to 100, 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.1

Count all the way to 100, both one at a time and in tens.

All Kindergarten worksheets

Last reviewed 2026-09-05. Aligned to K.CC.A.1 of the Common Core State Standards for mathematics.