A box contains 2 00 000 medicine tablets each weighing 20 mg. What is the total weight of all the tablets in the box in grams and in kilograms?

Total number of medicine tablet = 200000

Weight of one tablet = 20mg

Then total weight of all the tablet = number of all the tablet × weight of one tablet

Total weight of all the tablet = 200000 × 20

= 4000000mg

Total weight of all the tablet in grams

= 4000 grams

Total weight of all the tablet in kilograms

= 4 kilograms