Math practice Flashcards
A car sold for $4,000 AFTER a 20% discount. What was the original price of the car?
$5,000
George invested $2,500 into an account with a 6% interest rate, compounded monthly. Donald invested $3,000 into another account with a 4% interest rate, compounded quarterly. What would be the difference between their accounts after 3 years?
$388.78
Shawn gave a 15% tip on a $45 meal, what was the value of the tip?
$6.75
Steven borrowed $1,000 from a bank with 7% interest per month. How much interest would he have owed after a year?
$840
Jo borrowed $2,000 from the bank with a 7.5% interest rate, compounded quarterly. After some years, he owed $3,800. Write the EQUATION to get this problem STARTED.
2,000(1+0.075/4)^(4x)=3,800
A meal cost $28.56 AFTER a 20% discount AND 2% sales tax. What would’ve been the final price if there was no 20% discount?
$35.70
A pizza place has 3 styles of crust, 9 toppings, and 2 sauces for your pizza. How many different combinations of pizzas can you get, given you can only choose one topping?
54
A pizza place has 9 toppings for your pizza. How many different combinations of pizzas can you get if you want 2 DIFFERENT toppings?
36
If you roll 3 6-sided dice, how many combinations can result from the roll?
216
If a race has 7 racers, how many outcomes of the race are there?
5040
If a Math club has 29 members, how many ways can a President and a Vice-President be elected?
812
What does “9!” mean?
”!” is said as “factorial”, and means that we multiply every whole number down to 1, starting with the number indicated. In this case, 9! would be 987654321.
A preschooler knocked over an alphabet puzzle, and started to pick up the letters at random. He managed to pick up 8 letters. How many arrangements could be made of those 8 letters?
26!/18!
Calculate “0!”.
1
How many different ways can the letters in the word “balloon” be arranged (not necessarily as a real word)?
1260
