Random Math Stuff
If a bag of toys cost $135 for 15 toys, how much is each toy?
$9 each
Carmen went to Sonic and bought a Sonic Blast for $3.49. She had a coupon for $1. Without tax, the cost of the Sonic Blast is $4.49. True or False
False. Explain your answer.
On a graph, to find the rise over run, you find two good points and count the boxes/lines up to get the rise and count the boxes/lines across to get the run. True or False?
True
To find the diameter of a circle, multiply the radius x 2.
True or False?
True
To find the area of a circle with a radius of 8, the formula "3.14 x 82 " means "3.14 x 8 x 2".
True or False
False. Why?
Marcy goes to Sonic and buys a kid's meal, a #4 burger deal, and a Sonic Blast. The order costs $28.95. The tax is .07. How much is the tax on the order?
$2.02
Martie went shopping at Old Navy and they were having a 40% off sale. She bought a pair of jeans for $19.99. The jeans without tax will cost more with the discount. True or False
False. Discounts make items cost less.
Cheddar cheese cost $4.25 per pound. The equation that would match this statement is:
a. y = $4.25x
b. x = $4.25y
a. y = $4.25x
Find the circumference of a circle with a diameter of 20
62.8
The base of a triangular prism is a __________.
Triangle.
Ming bought a new dress for $75. The sales tax rate is 7 1/4%.
Step 1: What should you do with the fraction?
Step 2: Change it to the correct form to calculate the tax.
Step 1: Change it to a decimal. (7.25%)
Step 2: .0725
Holly bought a pair of shoes at DSW for $49.99. She has a coupon in the amount of $10. She will pay the $49.99 plus the tax and then take the $10 coupon off the total amount.
False. The coupon is taken off before the tax is calculated.
Simon has $100 in his bank. He is earning $5 an hour walking dogs and will put the money he earns in the bank. The equation that would match this statement is:
a. y = $100x + 5
b. y = $100 + 5x
b. y= $100 + 5x
The formula to find the area of the circle is.....
pi x r2
The formula for a trapezoid is ___________.
1/2 (b1 + b2) h
Romero bought a new sofa at Haverty's. He received a coupon from Haverty's for $125 for being a great customer. The sofa cost $1250. He paid $1,375 for the sofa before tax.
True or False
False. Why?
Anush has $250 to spend on a game system. He found a game system for $239. He has a 15% off discount. He will have to pay tax on his purchase. Tax is 8.25%. After the discount and tax is added to the $239 Anush already has, does he have enough to buy the game system? You must justify your answer.
Yes. Defend/Justify your answer.
The change of y is 8; the change of x is 16.
The equation would be k = 1/2x
True or False
True.
Find the area of a circle with a diameter of 12.
113.04
When you see the little square inside a shape, what is it pointing to and what should you draw on it?
The lines that are the base and the height. Draw arrow tips.
A bike cost $125. If you had the choice of a discount or coupon, which would be the better deal and why?
Discount: 20%
Coupon: $15
Discount. $125 x.20= $25
$125-$25 = $100
Coupon: $125-$15 = $110
Sophie wants to buy a 14" Squishmallow that costs $19.99. Sophie has a $5 coupon she can use on her purchase OR she can use a 15% discount to buy the Squishmallow. Which is the best option? Why?
The coupon.
Trisha has 25 rare coins in her collection. Her goal is to collect 5 rare coins a month. Write the equation to match the situation.
y=
y = 5x + 25
What is the circumference of a clock with a diameter of 8?
25.12
When calculating the volume or area of a shape, name at least 3 critical words/things to look for in the question.
(circles, rectangles, triangles)
1. What are they asking - area or volume
2. what is the SHAPE
3. Where is the little "box"
4. For circles - is it diameter or radius given.