Formulas/Ref Sheet
A=bh stands for ____ and is for the area of a ____
Area = base times height and is for a square, rectangle or rhomus
This word is a clue that you need to find the unit rate (or divide down to get 1 of something)
per
What is the rule for multiplying and dividing positive and negative numbers?
Same sign = positive, Different sign = negative
ex. -, - or +,+ = +.
ex. +, - = -
What is an example of a number opposite?
Answers may vary
What is Pi?
It is 3.14 or 22/7.
There is also a Pi button on the calculator
A=1/2bh stands for ____ and is for a _____
Area is 1/2 base times height or base times height divided by 2 and is for a triangle
How do I make a fraction into a decimal?
Divide the top by the bottom
What are the rules for adding and subtracting positive and negative numbers?
Answers may vary.
Ex. use + and - chart.
What is the one trick to finding sea level questions?
How do we solve them?
0 is sea level, above sea level is positive and below sea level is negative.
Make the distances positive and add them
What is perimeter?
A=1/2h(b1 + b2) stands for ____ and is for a ____
Area is 1/2 of the height times base 1 plus base 2. Add up your bases, multiply the height and divide by 2 and is for a trapezoid
How do I make a percent into a decimal
move the decimal place twice to the left. Ex 5 percent is .05.
What are the rules for symbols like this:
＞, ＜, ≥ , or ≤
The mouth eats the larger number.
The line underneath means "or equal to"
What does the dot symbol mean in math?
Multiply
What is the formula for the area of a circle?
Pi times radius squared
V=Bh stands for _____ and is for a ____
Volume is area of the base times the height and is for the volume of a 3-d figure (except the pyramid)
How do I make a decimal into a percent?
Move the decimal place twice to the right. Ex. .05 is 5 percent
How do you multiply fractions? Write one example.
You multiply straight across
What does a symbol mean outside a parentheses?
Ex) -( 7x +1)
It means you multiply.
-7x-1
What is the difference between a radius and a diameter? Draw a picture
Answers may vary
V=1/3Bh means ___ and stands for ____
Volume is area of the base times the height divided by 3 and stands for the volume of a pyramid
How do you find if things are proportional
Answers may vary.
Ex) Divide all to get the unit rate and if all numbers are equal they are proportional
How do you divide fractions? Write one example.
KCF. Keep change flip.
What is an example of what absolute value looks like. What does it mean?
|-4| = means how far is 4 from 0.
It is always positive.
|4| is also 4 because it is 4 away from 0.
It is always positive.
What is the difference between complementary and supplementary angles?
Complementary add to 90 and supplementary add to 180