1. Problem of the Day
1. A ship from Earth crashed into Planet Goomba. It landed on and crushed 12% of the Snarkle inhabitants. There were 895 snarkles on the planet before the crash. How many are there now?
2. Hailey and Makena each worked a shift today, selling tickets to the school fair for $12 each. Hailey worked the first shift. During Makena’s shift, she sold 8 tickets. At the end of the day, the total amount of money from tickets sold was $240. Which equation could be used to determine x, the number of tickets Hailey sold?
12(x + 8) = 240 b. x(12 + 8) = c x = 240 d. 12x + 8 = 240

2. 88 problems
$4680
$38.69
12 people
$1920
$18.75
16 problems
80.6 %
7.580
$37.70
71.9%

3. Oooh! I saw that scooter for $84! It’s nice!
I got it on sale for $72!

4. The difference divided by the original
That was a 14% discount!!
The difference divided by the original
How did you do that?

5. There is a formula for PERCENT CHANGE:
N−O O ×100 | 72 84 |
New –
Original
___________________ 84
Original | |
-12 12
________
______
×100 84 84
This was a decrease!
Which equals 0.142…
Which equals 14%

8. Um, no! It’s 3, 048 feet tall you bird brain!
According to my measurement, and multiplying by the appropriate scale, it would seem to me that this mountain is…
3,024 feet tall!
Um, no! It’s 3, 048 feet tall you bird brain!

9. Do you realize you were off by 0.8%!?
PERCENT ERROR
M−A A ×100 |
3024
3048 |
Mistake –
Actual
___________________
3048
Actual | |
-24 24
________
______
×100
3048
3048
How did you do that?
Which equals 0.008!
Do you realize you were off by 0.8%!?

10. Exit Ticket
Claire saw a TV for $350 that she wanted to purchase. When she went back after saving her money, the TV was being sold for $380. What was the percent of change? Was this an increase or a decrease?