1. Warm-up #9
The instructions to prepare a glass of Nesquik say to use 2 tbsp of powder for every cup of milk. Which of the following mixtures is too weak? A) 4 tbsp of powder in 2 cups of milk B) 2 tbsp of powder in 2 cups of milk C) 6 tbsp of powder in 2 cups of milk D) 10 tbsp of powder in 4 cups of milk

2. Warm-up #9
The instructions to prepare a glass of Nesquik say to use 2 tbsp of powder for every cup of milk. Which of the following mixtures is too weak? A) 4 tbsp of powder in 2 cups of milk B) 2 tbsp of powder in 2 cups of milk C) 6 tbsp of powder in 2 cups of milk D) 10 tbsp of powder in 4 cups of milk

3. Lesson 19 – Review of Methods for Determining Proportionality
Page in Textbook

4. ÷
7 8
49 56 ÷ ÷
=0.875
=0.875

5. Criss-Cross
1 10
2 20 20 20 =

6. Reduce
140 80
÷10
= 14 8 ÷2
= 7 4
÷10 ÷2

7. Factor of Change
2 3 ∙6
= 12 18 ∙6

8. Common Denominator
∙16 32
2 3
32 48 48
∙16

9. Unit Rate
$1.29 for 7 bananas. How much does 1 banana cost?
$1.29 7
=0.18 per banana

10. “Proportionality Coefficient”
K=2 1 2 3 4 ×2 ×2 ×2 ×2 2 4 6 8
𝑘= 𝑏𝑜𝑡𝑡𝑜𝑚 𝑡𝑜𝑝
Proportionality coefficient → k

11. Cross Multiply & Divide
If you need 125g of sugar for 32 cookies, how much sugar will you need for 48 cookies?
(125)(48)
=(32)(𝑥)
125 32
𝑥 48 =
6000
=(32)(𝑥) 32 32
𝑥=187.5𝑔