Question

On a scale drawing, 1 millimeter equals 4 centimeters. If a line on the drawing is 45 millimeters, how many meters is it actually?


1,800 m
180 m
18 m
1.8 m

Answer 1

1 mm = 4 cm
2 mm = ? cm
3mm = ? cm
4 mm = ? cm
45 mm = ? cm

Answer 2

What did you get?

Answer 3

idk how to do this

Answer 4

I'm trying to help you figure it out. :Let's try something different.

Let's say in 1 hour you earn 4 dollars. How much would you earn in 2 hours?

Answer 5

8dollars

Answer 6

ok good. now...stay with me here

1 hour = 4 dollars
2 hours = 8 dollars
3 hours = ? dollars
4 hours = ? dollars
45 hours = ? dollars

Answer 7

Can you fill those in?

Answer 8

3 hours = 12
4 hours = 16
45 hours= ?

Answer 9

So let's think
1 hour = 4 dollars
2 hours = 2 x 4 dollars
3 hours = 3 x 4 dollars
4 hours = 4 x 4 dollars
5 hours = 5 x 4 dollars
45 hours = 45 x 4 = ??? dollars

Answer 10

2 hours = 2 x 4 dollars = 8
3 hours = 3 x 4 dollars=12
4 hours = 4 x 4 dollars= 16
5 hours = 5 x 4 dollars=25
45 hours = 45 x 4 =180

Answer 11

Very good.

Answer 12

Let's go back to the millimeters and centimeters because it is the same thing.
1 mm = 4 cm
2 mm = 2 x 4 = 8 cm
3 mm = 3 x 4 = 12 cm
4 mm = 4 x 4 = 16 cm
5 mm = 5 x 4 = 20 cm
45 mm = 45 x 4 = ???? cm

Answer 13

How many centimeters?

Answer 14

180

Answer 15

Ok good. We're almost done.

Answer 16

We know it is 180 cm but the problem asks us how many meters. So do you know how many centimeters it takes to make 1 meter?