Real World Quick Sheet
Practical Math • No Busywork
Real World Quick Checks
Rule: Pick 2 • Skip 1
Name:
Date:
Pick any 2 to solve. Cross out the 1 you skip.
1
The Dying Phone Battery
Time Left
Your phone is at 18% battery. While streaming video, it loses 3% battery every 10 minutes. How many minutes of video do you have left before it dies?
Step 1: How many 3% drops fit in 18%?
18 ÷ 3 =
Step 2: Multiply by 10 minutes each:
Answer from Step 1 × 10 min =
Minutes until 0%:
min
2
The Online Resale Check
Cash In Hand
You bought a vintage jacket for $30 and sold it online for $70. But the selling app took $8 in fees and shipping cost you $12. What is your actual profit?
Step 1: Total money you spent:
$30 (item) + $8 (fees) + $12 (shipping) =
Step 2: Sale price minus total spent:
$70 − (your total spent) =
Actual profit in your pocket:
$
3
Not Getting Shortchanged
Exact Change
You pay with a $10 bill. Your energy drink is $3.25 and chips are $1.75. Tax is $0.40. How much change should the cashier hand back?
Step 1: Total bill:
$3.25 + $1.75 + $0.40 =
Step 2: Change from $10:
$10.00 − (total bill) =
Correct change back:
$
Page 1 Check: 2 solved, 1 crossed out?
Problem 1
Problem 2
Problem 3
Section 2 • Financial Defense
Avoid Getting Ripped Off
Rule: Pick 2 • Skip 1
Choose any 2 scenarios below. Cross out the one you skip. Once both are done, you are finished.
4
The Free Trial Trap
Calendar Math
On November 4, you sign up for a 14-day free trial on an app. If you don't cancel before day 15, they automatically charge your card $39.99.
What is the exact last day you can cancel for free?
November 4 + 14 days = November...
How much money do you save by setting a phone reminder?
Charge prevented =
5
Is the Drive Worth the Pay?
Hourly Truth
Someone offers you $45 to help them move gear for 3 hours. But driving there takes $15 in gas out of your own pocket.
Step 1: Cash left after gas:
$45 pay − $15 gas =
Step 2: Real pay per hour:
Cash left ÷ 3 hours =
Would you take this gig?
Yes, $10/hr is fine
No, not worth my time
6
The Fast Food Price Trick
Unit Price
A regular drink is 16 oz for $2.40. A giant drink is 32 oz for $3.20.
Regular cost per ounce:
$2.40 ÷ 16 oz = $0.15/oz
(Already calculated for you)
Giant cost per ounce:
$3.20 ÷ 32 oz =
Which option gives you more drink per dollar?
Regular Giant
FINISHED & CLEARED
You did the math that matters. Hand it in and get on with your day.
Done
