Rational Numbers 1
Rational Numbers 2
Ratios and Proportional Relationships
Expressions and Equations
Quarter 3 Math
100
True or false: -17 < -21 Explain why...
False Because the closer a negative is to 0, the larger it is.
100
What is 5 1/3 as a decimal?
5.33 because 1/3 = .33
100
In a survey, 20 people vote that they did not like pizza while 30 people voted that they did. What is the ratio of people who dont like pizza to everyone surveyed?
everyone surveyed means that 20 + 30 = 50 So 20 people liked pizza to every 50 surveyed
100
Simplify the expression: 3x - 4m + 9x
12x - 4m
100
The math term for the opposite of the word "equal"
Inequality
200
A submarine is currently 49 feet below sea level. It ascends 41 feet. What is the current altitude of the submarine? Explain how you got your answer:
Answer: - 8 Explanation: Because below means negative. so -49 + 41 is equal to -8
200
Which is greater: 7/9 or 70/100
7/9 is greater because 7/9 = .77 but 70/100 = .70
200
Complete the statement: A set of data is proportional when it has a ________________________
constant of proportionality (or constant alone would suffice)
200
Name the property that you would use to simplify this expression: (6 - 4R) (-4)
Distributive property
200
The symbol < means
The symbol means "LESS THAN"
300
Evaluate the expression for a = -2 and b = -9 a - ab
a - ab -2 - (-2 x -9) -2 - (18) = -20 answer: -20
300
Simplify the fraction 40/13
13 goes into 40 3 whole times, with 1 out of 13 pieces left over answer: 3 1/13
300
Complete the phrase: a graph is proportional when it _____________ and _________________
it is a straight line and goes through zero, zero (the origin)
300
Apply distributive property to simplify this expression) (6 + 3x) (-2)
6 x -2 and 3x x -2 final answer: -12 + (-6x) or -12 - 6x
300
Explain the inequality 3 > X
This means that X can be any number less than 3 but not equal to 3
400
A team won three times as many games as it lost. If it lost 15 games, how many games did the team win?
Three times as many means multiply by 3. So 15 x 3 = 45 they lost 45 games
400
A piece of string that is 10 1/4 inches long is shortened by 4 1/8 inches. What is the final length of the string?
First we need to find common denominator which is 8 10 1/4 = 10 2/8 10 2/8 - 4 1/8 = 6 1/8 4 1/8 = 4 1/8 answer: 6 1/8
400
A rectangle model measures 3 inches by 5 inches. The scale factor to build it is 1 inch : 4 feet. Find the dimensions of the building
1 inch = 4 ft so 4 x 3 = 12 ft and 5 x 3 = 15 ft The actual dimensions are 12 ft by 15 ft.
400
Simplify the expression: (X - 4) - (3x + 1)
everything in the second parentheses becomes opposite because of the negative sign in front X - 4 - 3x - 1 = -2x -5 final solution
400
Find all possible solutions to make this statement true: X + 1 < 4
Something and 1 makes less than 4. X cannot be 3 because 3 + 1 makes exactly 4 and we want only less than. So X must be any number less than 3 (not including 3)
500
A news station in Oregon recorded that the low temperatures for 5 days were –3, –2, 2, 2, and 6. What was the average temperature for those days?
To find average, add all numbers together and divide by how many there are. So, -3 + -2 + 2 + 2 + 6 = 5 5 divided by 5 = 1 1 is the average temperature
500
solve: 3/4 divided by 4/7 SIMPLIFY YOUR ANSWER at the end!
We need to keep, change, flip: 3/4 x 7/4 = 21/8 now we need to simplify: 8 goes into 21 2 whole times with 5 out of 8 pieces left over answer: 2 5/8
500
A statue stands 20 feet tall and casts a 9 foot shadow. A man stands at 10 feet tall next to it. What is the length of the man's shadow.
The factor from 20 to 10 is divide by 2. So 9 divided by 2 is 4.5 The man casts a shadow that is 4 1/2 feet
500
Solve the equation using inverse operation: (1/4)M = 10
When we remove a fraction, we must multiply by its reciprocal. In this case, the reciprocal of 1/4 is 4/1 We must multiply by 4/1 on both sides of the equal sign. So 10 x 4/1 = 40/1 = 40 FINAL SOLUTION: M = 40
500
What important test is coming up for you either this week or next week in regards to math?
the MAP test!
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