Multiplication is repeated addition. Knowing your times tables up to 10x10 is essential for all higher maths.
Key facts to memorize:
- Any number x 1 = itself (7x1=7)
- Any number x 10 = add a 0 (6x10=60)
- 9x rule: digits of product sum to 9 (9x3=27, 2+7=9)
- 5x rule: ends in 0 or 5 (5x7=35)