A
What is an integer?
An integer is any number that does not contain either a fraction or a decimal.
Describe "mean"
Means is also "average". The result of dividing the sum of the values into the number of values.
Solve: (-7) x (-12)
Negative x negative = positive
(-7) x (-12) = +84
Is zero an even number?
Yes!
What is a rational number?
A number that can be written as a fraction
Solve: 3 x 2 + 3 / 3
We USE PEMDAS, and work from left to right, 2 digits at a time:
For 3 x 2 + 3 / 3
first, 3 x 2 = 6
then, 3 / 3 = 1
finally, 6 + 1 = 7
What is a prime number?
Any number that is NOT evenly divisible by 2.
Is 10 a multiple of 2?
Yes, 2 x 5 = 10
What is an example of a rational number?
0.66 or 2/3
0.33 or 1/3
0.125 or 1/8
....etc
What does the numerator mean in a fraction?
It means the "part"
Describe "divisible by"
A number that can by evenly divided by another number, with no reminder
Solve: 20 x 5 / 10 + 20
We use PEMDAS and work from let to right, two digits at a time:
for 20 x 5 / 10 + 20
first, 20 x 5 = 100
then, 10 + 20 = 30
Finally, 100 / 30 = 33.33
Can an Integer be positive, negative, or zero?
Yes
Solve: 25 x (-3)
Positive x negative = negative
25 x (-3) = -75
Express the rational number 0.25 as a fraction
0.25 = 1/4
Is 11 a prime number?
Yes, the factors are only 1 and 11
What are the factors of 72?
1, 72
2, 36
3, 24
6, 12
9, 8
What is an even number?
Any number hat i evenly divisible by 2.
What are the 2 parts of a fraction?
Numerator and denominator.
What is a prime number?
A number that has exactly two positive factors: 1 and itself.
Is 1 a prime number?
NO
Solve (-65) / 5
Negative divided by positive = negative
(-65) / 5 = - 13
What is the greatest multiple of 3 that is less than 50?
Multiples of 3 that are less than 50 are:
3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48.
Then, 48 is the greatest multiple of 3 that is less than 50
What is the mean of 6, 8, 11, and 5?
6+8+11+5 = 30
30/4= 7.5
mean of 30 is 7.5
What does the denominator mean in a fraction?
It means the "whole" or the total