Number Theory
4,8,9 and 16 are all square numbers.
Is the statement true or false?
False. 8 is not a square number.
145+982=
1127
156+345=
501
In the equation: p=(l+w) 2
p,l and w are called_______.
variables
solve or x
3x + 2 + 2x = 7
5x=7-2
5x=5
x = 1
What is the identity of Multiplication?
1 is the identity,
example: 5*1 = 5
Change 1⅞ to a improper fraction
15/8
346-456
-110
if x = 2, y= -3, and z = 5
what is the numerical value of 2x + y
1
this number is rational, true or false?
78.68245975279815424
false
Here is a set of numbers, {-2, -1, 0 1 2 3}
What group do they belong too?
Integers
What percentage of 360 is 90
25%
-34-5
-39
if x = 2 , y=3, z=4
solve 4x + 3y+ 2z
8+9+8
ans= 25
A number is rational if it can be expressed as a fraction, p/q where 'p' and 'q' are integers and the denominator is not 0.
true or false?
true
Give me the definition of a factor. If you can't, give an example of a factor and why.
From the perspective of division, any number that divides another number “ x “ without leaving a remainder is a factor of x.
From the perspective of multiplication, any integer that multiplies with another integer to get the answer “ x “ is a factor of x.
5 ¾ - 2 ⅖
3 7/20
What do The each of the BODMAS letters stand for?
Brackets
Order
Division
Multiplication
Addition
Subtraction
remove brackets and simplify
3(5x+3y) - 2(4x+7y)
15x + 9y - 8x -14y
15x -8x +9y - 14y
ans: 7x - 5y
Any number to the power of zero is equal to what?
1
Write 36 as a product of prime, factors.
2 × 2 × 3 × 3
34.5 ÷ 0.03
1150
5316 ÷ 6
886
solve for x
4x - 2 + 6x - 4 =64
4x + 6x = 64 + 2 +4
10x=70
x = 7
why does our number system use 10 symbols?
we have 10 fingers