Mental Multiplication Strategies

Multiply mentally using doubling and halving

What You'll Learn

  • Use doubling strategies
  • Multiply by 5, 10, 20

📖Multiplication Strategies

15 x 4: Double 15 = 30, double again = 60! Or 25 x 8: Half of 8 is 4, double 25 = 50, so 50 x 4 = 200!