Question

how many millimeters are in a meter?
a 1
b 10
c 100
1000
how many centimeters are in a meter?
a 10
100
c 1
d 1000

Explanation:

Step1: Recall metric - length conversion

The prefix "milli -" means one - thousandth. 1 millimeter ($1\mathrm{mm}$) is $\frac{1}{1000}$ of a meter ($1\mathrm{m}$), so $1\mathrm{m}=1000\mathrm{mm}$. For centimeters, the prefix "centi -" means one - hundredth. 1 centimeter ($1\mathrm{cm}$) is $\frac{1}{100}$ of a meter, so $1\mathrm{m} = 100\mathrm{cm}$.

Answer:

How many millimeters are in a meter?
D. 1000
How many centimeters are in a meter?
B. 100