Jane wants to buy exactly 0.75 mg of candy. She has 675 grams on the scale already. How many more grams does she need to reach 0.75 kg

Answer 1

0.75 kg = 750 grams <--- 1 kg = 1000 grams

So,

750 - 675 = 75 grams

BTW, there is a small misprint in the first statement of the problem.

She wants .75 kg not .75 mg