The starter test for Addition & Subtraction. Twelve questions covering basic recall: reading + and = symbols, single-step adding and subtracting numbers to 20, and number bonds to 10. Every wrong answer shows an explanation so the child learns from each one. Takes about 5 minutes.
Aim for 70% before moving to the Main test. If a child scores below 50%, return to the worksheet and games first.
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.
A six-slide guided lesson teaching the bridging-through-ten strategy. Slides cover: why ten matters, splitting numbers to land on ten first, worked examples for 8+5, 7+6 and 9+4, and a quick try-it-yourself check. Best done with an adult for the youngest Y1s.