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What Was Taken Away? is a free printable Grade 1 maths worksheet on unknown subtrahend, within fifteen, aligned to Common Core standard 1.OA.B.4. It prints 16 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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All 25 sets ask different questions.

What Was Taken Away?

1.OA.B.4

NameDate

Work out each answer.

1.14 − ___ = 4
2.7 − ___ = 3
3.12 − ___ = 5
4.12 − ___ = 7
5.11 − ___ = 10
6.14 − ___ = 5
7.12 − ___ = 4
8.14 − ___ = 11
9.10 − ___ = 7
10.13 − ___ = 10
11.15 − ___ = 10
12.13 − ___ = 1
13.15 − ___ = 0
14.13 − ___ = 3
15.15 − ___ = 14
16.15 − ___ = 5

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

Answer key — What Was Taken Away?

Set 1. Prints on its own sheet.

  1. 1.10
  2. 2.4
  3. 3.7
  4. 4.5
  5. 5.1
  6. 6.9
  7. 7.8
  8. 8.3
  9. 9.3
  10. 10.3
  11. 11.5
  12. 12.12
  13. 13.15
  14. 14.10
  15. 15.1
  16. 16.10

Questions about What Was Taken Away?

What does the What Was Taken Away? worksheet cover?

It practises unknown subtrahend, within fifteen — 16 questions for Grade 1, all on Common Core 1.OA.B.4: See subtraction as finding the missing part. The instruction to pupils is “Work out each answer”, and the answer key follows on the next sheet.

Which Common Core standard does What Was Taken Away? practise?

CCSS.MATH.CONTENT.1.OA.B.4 — 1.OA.B.4, in the Operations & Algebraic Thinking domain for Grade 1. The published standard reads: “Understand subtraction as an unknown-addend problem.” The worksheet assesses that standard rather than a paraphrase of it.

What age or grade is this worksheet for?

What Was Taken Away? is written for Grade 1, typically ages 6-7. It is one of the sheets on 1.OA.B.4, so it suits any pupil working at that standard — including older pupils revisiting it and younger ones working ahead.

Does What Was Taken Away? come with an answer key?

Yes. All 16 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 What Was Taken Away? 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 What Was Taken Away? free to print and photocopy?

Yes. What Was Taken Away?, 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 1.OA.B.4

See subtraction as finding the missing part.

All Grade 1 worksheets

Last reviewed 2026-09-05. Aligned to 1.OA.B.4 of the Common Core State Standards for mathematics.