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Simplifying Ratios
Equal Proportions
Formulas
Percentage
Surprise Me
100

4:10

2:5

100

20/25 = 4/5 ?

Yes 

100
What is the formula for speed? 

Distance/Time = Speed

100

50% of 28

14

100

What is 12X2 ? 

24

200

6:12

3:6

200

8/6 = 12/9 ?

Yes

200

What is the formula for distance? 

Speed X Time = Distance

200

75% of 32

24

200

What is 7X9 ? 

63

300

25:35

5:7

300

Come up with your own equal proportion! 

Great!

300

What is the formula for time? 

Distance/Speed = Time 

300

45% of 210

94.5

300

What is a proportion? 

An equation where two rations equal each other? 

400

18:45

2:5

400

15/45 = 3/7 ?

NO

400
Which formula will we use to find MPH? 

Time? 

Speed? 

Distance? 


Distance/Speed

400

95% of 450

427.5

400

Is 1/16 equal to 16? 

NO

500

300:25

12:1

500

15/45 = 1/3 ?

Yes 

500

What formula needs to be used here? 

"How far apart will they be after 15 minutes?" 

Speed, Distance or Time? 

Distance

500

7% of 610

42.7

500

If 1:17.6 then 4: ?

70.4