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Make Ten — Missing First Number is a free printable Kindergarten math worksheet on the same fact with the unknown moved to the front, aligned to Common Core standard K.OA.A.4. It prints 5 questions with an answer key on its own sheet of paper, in 25 versions, 23 of them with different questions, so no two students 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 student

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23 of these 25 sets ask different questions — this skill does not have 25 questions to give. The rest reorder them, so no two students have the same paper in front of them.

Make Ten — Missing First Number

K.OA.A.4

NameDate

Work out each answer.

1.___ + 3 = 10
2.___ + 5 = 10
3.___ + 2 = 10
4.___ + 9 = 10
5.___ + 4 = 10

LessonPrint · K.OA.A.4 · Set 1 · free to copy for classroom use

Answer key — Make Ten — Missing First Number

Set 1. Prints on its own sheet.

  1. 1.7
  2. 2.5
  3. 3.8
  4. 4.1
  5. 5.6

Questions about Make Ten — Missing First Number

What does the Make Ten — Missing First Number worksheet cover?

It practices the same fact with the unknown moved to the front — 5 questions for Kindergarten, all on Common Core K.OA.A.4: Find the partner number that makes ten. The instruction to students is “Work out each answer”, and the answer key follows on the next sheet.

Which Common Core standard does Make Ten — Missing First Number practice?

CCSS.MATH.CONTENT.K.OA.A.4 — K.OA.A.4, under Operations & Algebraic Thinking for Kindergarten. The published standard reads: “For any number from 1 to 9, find the number that makes 10 when added to the given number.” The worksheet assesses that standard rather than a paraphrase of it.

What age or grade is this worksheet for?

Make Ten — Missing First Number is written for Kindergarten, typically ages 5-6. It is one of the sheets on K.OA.A.4, so it suits any student working at that standard — including older students revisiting it and younger ones working ahead.

Does Make Ten — Missing First Number come with an answer key?

Yes. All 5 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 Make Ten — Missing First Number can I print?

25 versions, of which 23 ask genuinely different questions — this skill does not have 25 distinct questions to give, so the rest reorder them and no two students still share a paper. Set 1 downloads all 25 as one PDF.

Is Make Ten — Missing First Number free to print and photocopy?

Yes. Make Ten — Missing First Number, 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.OA.A.4

Find the partner number that makes ten.

All Kindergarten worksheets

Last reviewed 2026-09-05. Aligned to K.OA.A.4 of the Common Core State Standards for Mathematics.