Numbers and Operations
When solving the following: 5² + 3 x 7 - (5 - 2)³ which step is done first?
The brackets: 5 - 2 = 3
How would you find out what ¾ of 20 is?
Multiply: ¾ x 20
OR divide by 4 and multiply by 3
OR proportions: 3/4 = ?/20
What is the mode of 34, 32, 33, 32, and 35?
32
What can be simplified in the following expression?
5x + 3x2 - 4y + 2x
5x + 2x
If you are asked to find the SUM of two numbers, what operation is that?
Addition
What is 20/30 in lowest terms?
2/3
What is the median of 1, 5, 4, 2, and 3?
3
What is -7 - (-3) ?
-4
What does 53 mean?
5 x 5 x 5
(= 125)
What is 5/2 as a mixed number?
2 ½
Name two types of graphs.
Line, bar, and circle.
If Mary has $5 more than twice what David has, and David has x, how much does Mary have?
2x + 5
What is 4 853 rounded to the nearest hundred?
4 900
What is 4% as a decimal?
0.04
How do you find the mean of a group of numbers?
Add them all up and divide by how many numbers there are.
What is the value of
2x - 3 if x = 4 ?
5
If you have to find the PRODUCT of two numbers, what operation is that?
Multiplication
How do you find 20% of 360?
0.20 x 360
OR 20/100 = ?/360
There are 200 raffle tickets sold. If you bought 10 of the tickets, and there is one winning ticket, what are your odds of winning?
1 in 20
(1/20)
When plotting a point on a graph, where would (-2,3) be?
Two to the left and three up.