# The mass of a moon rock is 3.5 kilograms. What is the mass of the moon rock in grams?

##### 2 Answers

#### Explanation:

If you use a smaller unit, your answer is bigger.

If you use a bigger unit, your answer is smaller.

To change from Kg to g you need to multiply by 1,000.

=

#### Explanation:

When you have an equation the actual value to the left of = must be the same as the actual value to the right of =.

So if you change the left in some way you must also do something to the right so that the equation is still true. Otherwise it becomes false.

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Known:

But we have 3.5 kilograms

Multiply both sides by 3.5