Question

http://prntscr.com/77oq9k
@k_lynn

Answer 1

There are 1000 grams in 1 kilogram. To make the problem easier, we'll need to convert every kilogram we see into grams. I see that there are 5.2 kilograms of rice. Multiply that by 1000 to find grams.

Answer 2

So what we need to start out doing is \(\color{red}{5.2 \times 1000}\)

Answer 3

Ok let me do that real quick

Answer 4

5200

Answer 5

Yep. Now we need to find out how much is used after 6 days. They use 200 grams per day. So \(\color{red}{200 \times 6}\)

Answer 6

1200

Answer 7

Yep. Now we can subtract to find out how much is left. \(\color{red}{5200-1200}\)

Answer 8

4000

Answer 9

Yes :) The answers are in kilograms and we're using grams right now. So we need to convert our grams back to kilograms.
1kilogram=1000grams.
We multiplied to find grams. What's the opposite of multiplication? We use that operation to convert grams to kilograms.

Answer 10

C?

Answer 11

No, not quite. We convert grams to kilograms by dividing \[\frac{ grams }{ kilograms }\] the fraction bar is also a division bar. So when we plug in our numbers: \[\frac{ 4000 }{ 1000 }\] So that's what we need to divide.

Answer 12

4

Answer 13

Yep. That's the answer.