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Grade 3 · Maths · Lessons
Sevens, eights and nines
7️⃣seven8️⃣eight9️⃣nine✖️times
Sevens, eights and nines.
The big ideaFive, then two more. Four, then four more. Ten, then one less.

How it works

Nines: ten times, then one less. 3 × 9 is 3 × 10 − 3.

Eights: double, double, double. Sevens: five, then two more.

Turn a fact round if it helps: 8 × 3 = 3 × 8.

9 × 3• 10 × 3 = 30• 30 − 3 = 279 × 4• 10 × 4 = 40• 40 − 4 = 36
Nine tricks.

Example 1: Nines

  1. 3 × 9 = ?
  2. Think 3 × 10 = 30.
  3. Take one 3 off: 30 − 3 = 27.
  4. So the answer is 27.

Example 2: Division with nines

  1. 81 ÷ 9 = ?
  2. Think what times 9 makes 81.
  3. 9 × 9 = 81.
  4. So the answer is 9.

Example 3: Eights

  1. 8 × 3 = ?
  2. Double 3 is 6. Double 6 is 12. Double 12 is 24.
  3. So 8 × 3 = 24.
  4. So the answer is 24.

Words to know

double
Two times a number.
product
The answer to a times question.

Watch out

Try it

  1. 6 × 9 = ?
  2. 8 × 8 = ?
  3. 49 ÷ 7 = ?
Answers: 1. 54 · 2. 64 · 3. 7
For grown-upsPractise one table a week, using the tricks, before drilling by memory.
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