When you divide a number by 1/2, the result a) half the original number b) twice the original number c) 50% of the original number d) 100% of the original number

Hello, right answer is B) twice the original number

If you divide a number for a fraction, you are multiplying that number for the opposite of that fraction (so 1/2 = 2)

This means 4 : 1/2 = 4*2 = 8

Instead, if you multiply a number for 1/2, you are dividing it for 2.

Hope it helps :)