1. TAKE OUT LAST NIGHT’S HOMEWORK: ACE 8-12, 34-402. WARM UP: GREEN BOOK P.408 (21-25)3. DEAR

Thinking Cap Thursday!

WARM UP ANSWERS: P. 408 (21-25)

21) 21.5%

22) 3 hours

23) 16 states

24) ~47.3%

25) B 40%

# correct5

ANSWERS SCORE

HOMEWORK ANSWERS

HOMEWORK ANSWERS, CONT…

Make sure your notebook cover sheet looks like this:

#. Date Book Brief Description

1. 12-5 C&S Problem 4.1, ACE 1, 2, 15-17, 232. 12-6 C&S Problem 4.2, ACE 3-5, 18-193. 12-7 C&S Problem 4.3, ACE 6-14, 224. 12-12 B&PIII Problem 4.1, ACE

2,3,13,14,27,285. 12-13 B&PIII Problem 4.2, ACE

4,5,31-336. 12-14 B&PIII Problem 4.3, ACE 8-12,

34-407. 12-15 B&PIII Problem 5.1, ACE 1-6,

16-18

Big Idea: Finding Percent of Discounts

You Need: Calculator5.1 Lab sheet

What does each of these coupons mean? What other styles of coupons have you seen?

$0.75 ÷ 3 = 0.25 OR 25 OR 25%$3.00 ÷ 3 1.00 100

Savings 0.50 = 0.0588 OR ~ .06 = 6 = ~6%Regular 8.50 100

Savings 11.80 = 0.4 OR 4 OR = 40 = ~40%Regular 29.50 10 100

They are asking: 0.25 times what number is $24.75?

Strategy: Scale Up! If you multiply by 4, you will get 1.00 and 99.00

Now, ask yourself: “What number times 1 is $99?”

Equation: 0.25n = 24.75

Answer: $99

Write an equation 0.15n = 6.75“15% of what number is $6.75?”

Solve for n 0.15n = 6.750.15 0.15

n = 45The original cost was $45

Make sure your notebook cover sheet looks like this:

#. Date Book Brief Description

1. 12-5 C&S Problem 4.1, ACE 1, 2, 15-17, 232. 12-6 C&S Problem 4.2, ACE 3-5, 18-193. 12-7 C&S Problem 4.3, ACE 6-14, 224. 12-12 B&PIII Problem 4.1, ACE

2,3,13,14,27,285. 12-13 B&PIII Problem 4.2, ACE

4,5,31-336. 12-14 B&PIII Problem 4.3, ACE 8-12,

34-407. 12-15 B&PIII Problem 5.1, ACE 1-6,

16-18