Multiply by 9

key notes :

9 Times Table Pattern:

Multiplying by 9 gives answers like:
9 × 1 = 9, 9 × 2 = 18, 9 × 3 = 27…

✅ Notice the pattern in tens and ones digits:

• Tens increase by 1 each time.
• Ones decrease by 1 each time.
• Example: 09, 18, 27, 36, 45, 54, 63, 72, 81, 90

Finger Trick to Multiply by 9: ✋

• Hold out 10 fingers.
• To find 9 × n, fold the nth finger down.
• Fingers to the left = tens, fingers to the right = ones.
• Example: 9 × 4 → fold 4th finger → 3 fingers left, 6 fingers right → 36 ✅

Adding Digits: ➕

• Any multiple of 9, when you add its digits, equals 9.
• Example: 9 × 5 = 45 → 4 + 5 = 9

Skip Counting by 9:

• Count by 9’s: 9, 18, 27, 36, 45, 54, 63, 72, 81, 90…

Real-life Examples: 🌍

• 9 pencils in each box. 4 boxes → 9 × 4 = 36 pencils.
• 9 days in a project schedule → 2 projects → 9 × 2 = 18 days

Practice Tip: ✏️

• Recite 9 times table aloud.
• Use objects (blocks, pencils) to make groups of 9.
• Play “find the 9s” games to remember easily.

Learn with an example

let’s practice!