The 9 table digit pattern — Maths trick for kids

The trick

Add to 9 — “the two digits of 9 × n (up to 9 × 10) always add up to 9”

1. The tens digit of 9 × n is one less than n.
2. The two digits add up to 9, so the ones digit is 9 minus the tens digit.
3. Missing digit? Use whichever rule fits.

Use it for: Remembering and checking the 9 table, and spotting mistakes like 9 × 6 = 56 (5 + 6 is not 9!).

Worked example: 9 × 8 = ?2 — what is the missing digit? → 7

✏️ Practice

Work it out in your head or on paper, then tap your answer — or type it and press Check. Stuck? Press “Show me how”.

🏁 Trick 2 test

20 questions. Check each answer, then go to the next one. Get 16 or more right to pass.

🏅 Sign in with Google to earn the 🔍 Digit Detective badge when you pass — and a certificate when you finish all 5 tricks of Part 1 · Finger & table tricks. You can still take the test without signing in.

🖨️ 9 Times Table Pattern Worksheet

• Worksheet set 1 (PDF)
• Worksheet set 2 (PDF)
• Worksheet set 3 (PDF)