Page 7 - Multiplying 2-Digit Numbers by 1-Digit Numbers
P. 7
Multiplication Magic Trick
● Here's a fun trick: To multiply by 9, multiply
by 10 and subtract the original number
● For example: 24 × 9
● 1) 24 × 10 = 240
● 2) 240 - 24 = 216
● So, 24 × 9 = 216
● Can you explain why this trick works?
