Creating Expressions
x+98
A company rents bicycles for a fee of x increased by $4
x+4
p+4
4 more than p.
Is there an error or is this correct?
The sum of x and 45.
x / 45
Error, sum is the key word for addition.
x+45
What is a Variable? Write the definition and give an example.
A variable is a letter in an expression or equation where that number is the unknown.
a,b,c,d,e,f...z
Eight times a number
8x
George earned 80 points in the subjects. Bruno earned b fewer points than George. Write an expression that shows how many extra points Bruno earned.
80-b
x-9
9 less than x.
9 fewer than x.
Is there an error or is this correct?
9 divided by k.
9/k
Yes this is correct.
What is a coefficient? Give a definition and an example.
A coefficient is a number next to a variable.
3x, 4x, 5x...
9 less than any number.
x-9
Maria has three more crayons than as Elizabeth.
c+3
16/p
the quotient of 16 and p.
16 divided by p.
16 spilt up p.
Is there an error or is it correct?
9 less than r.
9-r
Error, the 9 will be less than r making r the number in front and 9 in the back.
r-9
What is a constant? Give a definition and an example.
A number which is by itself in a expression or equation.
3,4,5,6 (not going there)
Seventy more than five
5+70
A technician charges $30 per hour.
30h
x-7
7 less than a number
a number decreased by 7
Is there an error or is this correct?
The product of 5 and k.
5/k
Error, you don't put an divide, you multiply
5k
What is a term?
3x + 4
Twice of x.
2x
A sweater originally costing P dollars decreased by 20 euro discount
1.2q
1.2 multiplied by q.
The product of 1.2 and q
Is there an error or is this correct?
327 less than any number.
327 - x
Error
x-327
What is an equation AND an expression? Give the definition of BOTH and an example of BOTH.
Equation = a problem which has an equal sign in it.
x+5=7
Expression = a problem which the is NO equal sign.
x+5