Double check your work
An equation is balanced when both sides have the same value. We can use this method to check if the value of a variable makes the equation true.
This is an invisible sign that is to the left of every number unless there is already a negative sign there.
A positive sign.
This is a method that uses the inverse operation that you can use when you add a number to a variable in an equation.
Example:
7 + x = 15
What is subtracting the other addend from the sum?
Example:
15 - 7 = 8, therefore x = 8
A number that is 5 less than y.
What is y-5?
This is a number to the left of a variable which we multiply by the variable.
What is a coefficient?
This is a process we can use to check if a division answer is true.
What is multiplying the quotient by the divisor?
All whole numbers have this as a denominator.
What is 1?
When you need to simplify an expression, you can think of this kind of model.
7(8y+6)
What is area model?
A number that is three times as much as w.
This is a property that multiplication and division share which means the order in which we multiply and divide does not matter.
5+6=11 and 6+5=11
5x6=30 and 6x5=30
What is the commutative property?
When we are done performing any operation, we can double check our work by performing this other operation.
What is inverse operation?
This is a small number at the top right of a number that means repeated multiplication.
What is an exponent?
This is a different way that we can always write a multiplication problem.
What is as a fraction?
A mathematical statement that describes a number x
that is not greater than 9.
x le 9
What is an inequality?
If I don't remember a formula, I can check this resource that is available to me during MCAS.
What is the MCAS reference sheet?
What is as a fraction?
When the divisor is less than the dividend, the quotient will always be this.
9 div 3
81 div 9
125 div 25
What is greater than one?
9 div 3 = 3
81 div 9 = 9
125 div 25 = 5
This is what two expressions are when they have the same value.
A number to the left of 0.
What is a negative number?
Understand
Plan
Execute the plan
Look back (and double check your work)
This is the number to which an exponent is attached.
What is a base?
What you do when you need to find the value of a variable next to a coefficient in an equation by using the inverse operation.
Example:
2x=6
What is dividing the product by the coefficient.
Example:
6 div 2
This means out of 100 or per 100.
What is percent?
This is an operation that undoes another. It is the opposite of the operation which it undoes.
What is an inverse operation?