About this worksheet
10 times the number minus the number once: 9 × 7 = 70 − 7. The finger trick (fold down the nth finger) gives the same facts to 9 × 10. The digits of every answer up to 9 × 10 add up to 9, and the tens digit is one less than the multiplier (9 × 7 = 63). The facts that need the most repetition: 9 × 6, 9 × 7 and 9 × 8 before the pattern is secure; 9 × 11 and 9 × 12 after it.
Typical use: grade 3, one sheet a day for a week, then a mixed 0–12 sheet to check the 9s hold up among the other tables. Narrow the range to 1–10 for a shorter table, or switch to the horizontal layout for a fact-test format.
Standards
- Common Core 3.OA.C.7 — fluently multiply within 100
- Common Core 3.OA.B.5 — properties of operations (commutativity: 9 × a = a × 9)
Questions
What is the best way to learn the 9 times table?
10 times the number minus the number once: 9 × 7 = 70 − 7. The finger trick (fold down the nth finger) gives the same facts to 9 × 10.
How can a child check an answer in the 9s?
The digits of every answer up to 9 × 10 add up to 9, and the tens digit is one less than the multiplier (9 × 7 = 63).