Ratio & Rates
What are the two types of ratios?
Part-to-part ratios and part-to-whole ratios
A percent always has what number as the denominator?
100
What is the term called that is on the inside of the "house" when dividing?
Dividend
Positive and negative whole numbers, plus zero
What is a variable?
A symbol, typically a letter, to represent a number or unknown value.
What are the three ways to write a ratio?
Using the word "to," using a colon, using a fraction
[ex. 2 to 10, 2:10, 2/10]
Write 80% as a fraction in simplest form.
4/5
If there is a remainder in your quotient, what should you do to make the quotient a decimal?
Annex zeros (add a decimal to your dividend and quotient and add zeros until there is no remainder)
TWO PART:
1. What is the opposite of zero?
2. Find the absolute value -|-23|
1. Zero
2. -23
What is 4^3 (4 to the 3rd power)
64
Gracie is having a pizza party. Two large pizzas serve 9 people. How many large pizzas should she order to serve 36 guests at the party?
Eight large pizzas
Write 3/20 as a decimal.
0.15
Find the quotient of 648 divided by 18.
36
Order from least to greatest: -11,3,-3,-7,5,1
-11,-7,-3,1,3,5
TWO PART:
1. What are the order of operations?
2. Find the solution: 9 + 8 x 3 - (5 x 2)
1. Parentheses, Exponents, Multiply/Divide (from left to right), Add/Subtract (from left to right)
2. 23
If you graph a ratio on a coordinate plane, what should form after you graph multiple points?
A line
Write 0.65 as a fraction in simplest form.
13/20
TWO PART:
1. What should you do to the decimals when adding/subtracting decimals?
2. Find 23.498 + 14.93.
1. Line up the decimals
2. 38.428
What is a rational number?
Any number that can be written as a fraction a/b, where a and b are integers and b is not zero.
Like Terms: 5a, 6a
Coefficients: 5, 6
Constants: 2, 7
A cat's heart beats approximately 45 times in 15 seconds. At this rate, how many times does the cat's heart beat per second?
3 times per second
Find 15% of 240.
36
Find the quotient of 4 2/3 divided by 6.
7/9
What is the point A (3/4, 3) reflected over the x-axis?
A' (3/4, -3)
Evaluate the expression 4x+2 if x=5
22