Question about metric conversion (its pretty simple) ?

Question

Ok, I'm in 9th grade Honors intro to physics and chemistry. and were learning about the metric system and were supposed to convert the numbers she gave us. well theres one that confuses me......could you please tell me the answer and how you got it? thanks! i will chose best answer

2,000mg 2,931cg = 31g ____cg

Answer 1

31g = .31cg

Answer 2

You'll have to use the following as the question isn't clear.

1mg = 1/1000th of a gram. 2,000mg / 1,000mg/g = 2g.

1cg (centigram) = 1/100th of a gram. 2,931cg / 100 = 29.31g.

31g x 100cg/g = 3,100cg.

Giving a possible answer to your question of ...

2g + 29.31g = 31g and 31cg.

Answer 3

not clear, you have 3 numbers, which do you want converted and to what.

da (deca) = x10

k (kilo) = x1000

M (Mega) = x1000000

G (Giga) = x1000000000

T (Tera) = x1000000000000

d (deci) = /10

c (cent) = /100

m (milli) = /1000

µ (micro) = /1000000

n (nano) = /1000000000

p (pico) = /1000000000000

Answer 4

1 mg = 1/1000 g = 0.001 g

1 cg = 1/100 g = 0.01 g

2,000 mg + 2,931 cg = 2,000 mg + (2,900 cg + 31 cg) = (2 g + 29 g) + 31 cg = 31 g + 31 cg.

So fill in the blank: 31 cg