Variables and Expressions
How many variable do you find in the following expression?
3x + 2xy - z
3
Simplify
(6 - 2)2 x 5
80
True or False
A subset of a set consists of elements from the given set.
True
Which property do you see here?
a + b = b + a
Commutative Property
Simplfy
-8 + 6 - 5
-7
How do you read or translate the following algebraic to simple words?
(n / 5) - 5
the quotient of n and 5 minus 5 or n divided by 5 minus 5
Following the correct order of operations, what is the last thing I should do?
addition and subtraction
The whole numbers is a subset of which two sets?
Any combination of integers, rational numbers or real numbers.
Simplify the expression and explain which property or properties you used.
(4 + 3b) + 5
9 + 3b
Commutative and Associative Property
If I have an expression that is multiplication and division only, and it has 3 numbers that are negative; will my final answer be negative or positive?
negative
Write the following expression using numbers and symbols:
3.2 less than the product of 5 and m
5m - 3.2
If x = -2, how do you evaluate the following expression?
3x2(x + 2)
0
What are the two subsets of real numbers that form the real numbers?
Rational and Irrational numbers
True or False
For all real numbers j and k,
j * k =(k + 0) * j
True
Is c=-5 is a solution of 17=37+4c?
True.
Is the following an algebraic or numerical expression? Why?
2(6 -3 +m)
Algebraic because it includes a variable.
Evaluate each expression for c=3 and d=5.
cd2+4=
79
How are rational and irrational numbers different?
Rational numbers can be written as ratio (fraction), but irrational numbers cannot.
Irrational numbers have nonrepeating, nonterminating decimals.
Which property justifies the following equation?
b * 0 = 0
Zero product property
True or False. Justify your answer.
The sum of a positive number and a negative number is always negative.
False. It depends on which number is bigger.