Ratios and Proportional Reasoning ...

I'm sure my life will end still wanting to read just one more book.

176

1. Find 12.5% of 240

2. Write 1/4 as a decimal

3. What is 16% as a decimal?

4. Find 12.5% of 40

5. What is 12 x 8?

6. In Nova Scotia, HST is 15%. How much tax would you have to pay on a radio that costs $200.00?

7. You have $12.00 to spend on spring rolls. Spring rolls are three for $4.00. How many can you purchase?

8. What is 16 x 8?

9. PST is 8% in Ontario. How much tax must be paid in Ontario on an $80.00 pair of shoes?

10. What is 8 x 22?

30

0.25

0.16

5

96

$30.00

9

128

$6.40

Consumer Decisions - Mental Math #3

Sam is looking for posters to cover the walls in his room. He finds one poster that is 50 cm by 50 cm. He finds another that is 21 cm by 67 cm.

Find the area of each poster. Compare the area of the first poster to the are of the second using a ratio. Do you notice anything about the ratio you made?

If you want to enlarge a 3 inch wide by 4 inches long photo to be 9 inches wide, how long will the length be?

Assignment: Page 240Questions #1 to 6