1. Bell work Week 24 Pick a math word and write the definition.
Chapter 6 or Chapter 1
Check calendar and your student vue!
Turn in your unit rate homework.
Answer: C

2. Solving Proportions Pg. 39 RS
Answer: C

3. = = Proportions A proportion is an equation that states
that two ratios are equivalent.
Example: = =

4. = = Proportions can also be solved using cross products. 4 12 5 x x
Cross multiply
Solve for x
4x = 5 12
4x = 60
x = 15 = x
7 48 = 8x
336 = 8x
42 = x
Cross multiply
Solve for x

5. Proportion Examples Pg. 39 LS
Answer: C

6. If one of the numbers in a proportion is unknown, mental math can be used to find an equivalent ratio.
Example: 1 = x
x 3 =
Hint: To find the value of x, multiply 3 by 3 also. x =
x 3

7. If one of the numbers in a proportion is unknown, mental math can be used to find an equivalent ratio.
Example : 2 = x ÷ 4
Hint: To find the value of x, divide 32 by 4 also. = x = ÷ 4

8. Example 3
Solve the proportion using equivalent ratios?
Answer: x = 20
x = 20
Ck:
2 x 20 = 40
8 x 5 = 40

9. Example 4
Solve the proportion using equivalent ratios?
Answer: x = 16
x = 16
Ck:
4 x 36 = 144
9 x 16 = 144

10. Grab a whiteboard and an area to work!
Whiteboard practice
Grab a whiteboard and an area to work!
Answer: C

11. 1) 2) 3) 6) 4) 5) Solve the proportion using equivalent ratios:
Answer: x = 10 6) 4) 5)

12. Solve the proportion using equivalent ratios:1) 2) 3)
X = 10
X = 20
X = 4
Answer: x = 10 4)
X = 3 5) 6)
X = 7
X = 15

13. Video 10 minutes
What is a proportion?