1. Mental Multiplication of a number  5 Given an unknown number, N What is N  5 = ? Let N = 2 6 8 2 6 8  5 0 4 41 3 3

2. Mental Multiplication of a number  5 4 2 6 8  5 041 3 3 Paper & PencilMental Math 2 6 8  5 = (10  2)

3. Mental Multiplication of a number  5 4 2 6 8  5 041 3 3 Paper & PencilMental Math 2 6 8  5 = (10  2) 2 6 8  10 2

4. Mental Multiplication of a number  5 4 2 6 8  5 041 3 3 Paper & PencilMental Math 2 6 8  5 = (10  2) 2 6 8  10 2 = 1 3 4 0

5. Mental Multiplication of a number  5 Mental Math N  5 = N  10 2 6 4  5 = 3 2 0 3 8  5 = 1 9 0 4 1  5 = 2 5  5 = 2 0 5 1 2 5 2 4 1 2  5 = 1 2 0 6 0 6 3 0 7  5 = 3 1 5 3 5