KS1 Year 1 number bonds practice covering bonds to 10 and bonds to 20. Six worksheets with missing-number sentences, part–whole models and related subtraction facts, plus a full checker-verified answer key. English only.
Who it is for: Year 1 (ages 5–6) addition and subtraction facts within 10 and 20 — morning work, intervention, homework or early finishers.
Inside (14 A4 pages, including the Lesson Planned licence page): cover and teacher notes; six worksheets (B1–B6: missing numbers, part–whole and related subtraction for 10 and for 20); answer key pages; licence page. 108 questions in total. Answers included for every item.
Time to teach: about 10–15 minutes per sheet. Print A4 at actual size / 100%. Use as a warm-up, independent practice, or a short intervention block.
How answers were checked: every missing number was generated with a fixed seed and re-solved by an independent checker before the PDF was made (108/108 pass).
Wording: independent classroom maths practice. Not a SATs paper and not affiliated with the Standards and Testing Agency.
© 2026 Ren Sun, trading as Mingpine. Bought on Lesson Planned: the Lesson Planned Teaching Resource Licence applies. Please don’t share or resell.
Pinyin Sprouts is a shop of Ren Sun, trading as Mingpine · mingpinelabs@gmail.com
Business address: Flat 12 Arundel Court, 43 – 47 Arundel Gardens, London, W11 2LP, United Kingdom
Contact: mingpinelabs@gmail.com
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