Math 8 Year Review

Algebra: Combine like terms to reduce/simplify expressions. variables combine with variables (add or subtract the coefficients), numbers (constants) combine with other numbers(constants). Simplify the following:

5a +2b -3a +4

• 8a +2b +4

• 8ab

• 2a +2b+4

• 4ab+4

Fraction Operations:

What is the one requirement in order to add or subtract fractions?

Simplify by combining like terms:

2x + 1 +7x

• 10x

• 9x + 1

• 10

• 9 + 1x

What is a perfect square?

• The product if a number was multiplied by its half
• The quotient if a number was divided by half
• The product if a number was multiplied by itself
• The quotient if a number was divided by itself

Which one is NOT a perfect square?

• 5
• 100
• 144
• 36

Solve:

What do you do if you are asked to square root a number that is NOT a perfect square?? For example:  √50

• You can't do anything
• 'Split' the square root to try to find a perfect square 
• Square the square root to get rid of it

what are the best two perfect squares to help estimate the value of √50 ? type your answer: _____ and _____

• 49 and 64

• 64 and 49

Pythagorean Theorem: Which one is 'c'

• 5
• 12
• 13

How would you set up the Pythagorean Theorem?

• 3² + b² = 4²
• 3² + 4² = c²
• 3 + 4 = c
• a² + 3² = 4²