Math Terms/Vocabulary
What do we call numbers that are below zero?
Negative
The freezing point of pure water is 0°C, but adding salt to water changes its freezing point. During a science experiment, Patrick finds a solution of salt water that has a freezing point of –6°C.
Which of these describes the freezing point of the salt water?
- Colder than pure water's freezing point
or
- Warmer than pure water's freezing point
Colder than the water's freezing point
12/15 x 4/9 = ?
(Bonus points: Write the answer simplified)
60/135 or 4/9
List each step of Order of Operations.
(Hint: Please Excuse My Dear Aunt Sallie)
Parentheses
Exponents
Multiplication / Division
Addition / Subtraction
What is the formula to find the area of a TRIANGLE
(Base x Height) ÷ 2
What word describes the relationship between two quantities?
Ratio
Mia owns stock in the clothing company her grandparents started. Yesterday, the value of the stock fell 4 points.
What integer represents the change in the stock's value?
-4 or -4 points
6 - 4.23
1.77
Solve.
81 ÷ 3 + 6
9
Turn this mixed number into an improper fraction.
4 2/5
4 2/5 = 22/5
What is the bottom number of a fraction called?
(Bonus: What does it represent?)
Denominator
Which sign makes each equation true. (100 points each)
-10 ___ 2
4 ___ |-4|
-27 ___ -25
-10 < 2
4 = |-4|
-27 < -25
Complete the sentence
When we add or subtract decimals we must _____________.
Solve
160 - 60 ÷ 10 + 2
156
What process do we use to DIVIDE Fractions?
Solve. 5/7 ÷ 3/4
Keep, change, flip OR multiply by the reciprocal
5/7 ÷ 3/4 = 20/21
(100 points for each correct answer)
What do you call the answer to a:
Addition problem -
Subtraction problem -
Multiplication problem -
Division problem -
Addition - Sum
Subtraction - Difference
Multiplication - Product
Division - Quotient
4 part question. (100 points each)
1) What is the name/term of this notation? |?|
2) What does it tell us?
3) Answer: |-5| = __
4) Answer: |11| = __
1) |?| - Absolute value
2) Absolute Value tells us the numbers distance away from zero.
3) |-5| = 5
4) |11| = 11
Must show your work for points.
1,653 ÷ 6 =
275.5
14 - 2 x (42 - 6)
120
Leo and Chad ate lunch at a restaurant. Leo's lunch cost $6.69 and Chad's lunch cost $6.85. Leo paid for both lunches. If he paid with a $20 bill, how much change will he get back?
$6.46
Fill in the blank:
3/2 is the ___________ of 2/3
Reciprocal
7th Grade Challenge! Solve
-8 + 4 = ___
10 - 13 = ___
-8 + 4 = -4
10 - 13 = -3
Must show your work for points.
518.4 ÷ 1.2 =
432
Spot the mistake. Then solve correctly
13 + 33 × 2 =
13 + 9 x 2 =
22 x 2 = 44
This person added 13 + 9, when they should have multiplied BEFORE adding.
The answer is 31
A telephone poll asked people whether they like playing golf. Of the 240 people polled, 35% like playing golf. How many people said they like playing golf?
84 people like playing golf