A printable activity book themed around solving number mysteries. Mission 1 — Bond Hunt (find all the pairs that make 10). Mission 2 — Missing Number Mysteries. Mission 3 — Two-digit Tunnel (regrouping practice). Mission 4 — Word Problem Crime Scene. Includes detective badge.
The schoolbook-depth Main test. Eighteen questions across the full breadth of the KS1 addition and subtraction programme of study: reading number sentences, fact families, number bonds to 10 and 20, two-digit calculations, missing-number problems (e.g. 8 + □ = 14), commutativity, and one-step word problems.
Designed to mirror what children meet in school-issued workbooks. Pass mark is 70%. Detailed explanations on every question — wrong answers teach.
The stretch test for confident children. Fifteen questions that push beyond schoolbook level: two-step word problems, bridging through 10 (e.g. 8 + 5 = 8 + 2 + 3), finding missing numbers in the middle of a sentence, applying addition and subtraction across measures (money, mass, length), and reasoning about what makes a calculation easier.
Pass mark is 60% — this test is harder than the Main test on purpose. Don’t worry about lower scores; this is where deep understanding shows.
A one-page printable worksheet with progressively harder tasks: number bonds to 20, missing number sentences (4 + ? = 10), two-digit addition with regrouping (Y2), and a word-problem section. Includes a teacher-marker key.
A 12-question quiz mixing Year 1 and Year 2 difficulty, including bond recall, missing-number reasoning, regrouping and word problems. Tracks best-of-N personal best.