Jane and sarah both dive down from the surface of a pool. jane first dives down 5 feet, and then dives down 3 more feet. sarah first dives down 3 feet, then dives down 5 more feet.
a. does the order in which you add two integers with the same sign affect the sum? explain
b) interpret the sum in context.
c) multiple representation space use the number line to model the equation -5 +( -3 ) = -3 +( -5)

14

20

and  

21

30

Explanation:

A ratio can be expressed in 2 ways. Using a 'colon' or as a fraction.

That is 7 : 10 (reads 7 to 10) or  

7

10

To find equivalent ratios it is probably best to use fraction form.

7

10

is in  

simplest form

This means that no other number, apart from 1, will divide into 7 and 10.

In this case we can choose any number to multiply the numerator and denominator, to create equivalent ratios.

Choosing 2

⇒

7

×

2

10

×

2

=

14

20

←

equivalent ratio

Choosing 3

⇒

7

×

3

10

×

3

=

21

30

←

equivalent ratio