how can you use 2 x 8 to find 4 x 8

4 = 2*2

so
4*8 = 2 * 2 * 8
or 2 * 16

To use the multiplication of 2 x 8 to find 4 x 8, you can apply the concept of doubling. Here's how you can do it:

1. Start with the given multiplication: 2 x 8.
2. Multiply 2 by 2 to get the doubled value: 2 x 2 = 4.
3. Multiply 8 by 2 to get the doubled value: 8 x 2 = 16.
4. Now, you have the doubled values: 4 and 16.
5. Since you want to find 4 x 8, you can use the doubled values to solve it.
6. Multiply the doubled values together: 4 x 16 = 64.
7. So, 4 x 8 is equal to 64.

By doubling both factors (2 and 8) from the original multiplication (2 x 8), you can find the product of any other multiplication problem that shares the same factor (8 in this case).