Could you use doubling to multiply 7x 3? explain

sure you could

how about double the 7, then double again, and then subtract 7

7(2)(2) - 7
= 7(4-1)
= 7(3)

21 Certainly! Doubling is a multiplication strategy that involves repeatedly adding a number to itself. To use doubling to multiply 7 by 3, follow these steps:

1. Start by writing down the number you want to double, which in this case is 7.
2. Double the number by adding it to itself. So, 7 + 7 = 14.
3. Continue doubling the result until you reach the desired number of doublings, which is 3 in this case.
- Double 14: 14 + 14 = 28.
- Double 28: 28 + 28 = 56.

Thus, using the doubling technique, 7 multiplied by 3 equals 56.