8th Grade Math Formulas
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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Perimeter of a Square | P = 4s
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Perimeter of a Rectangle | P = 2l + 2w or P = 2(l + w)
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Circumference of a Circle | C = 2πr or C = πd
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What is Pi(π)? | π = 3.14 or π = 22/7
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Area of a Square | A = s to the 2nd power
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Area of a Rectangle | A = lw or A = bh
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Area of a Triangle | A = 1/2bh or A = bh/2
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Area of a Trapezoid | A = 1/2(a+b)h
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Area of a Circle | A = πr to the 2nd power
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Area of an Ellipse | A = πab
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Volume of a Prism | V = Bh
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Volume of a Cylinder | V = Bh
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Volume of a Pyramid | V = 1/3Bh
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Volume of a Cone | V = 1/3Bh
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Volume of a Sphere | V = 4/3πr to the 3rd power
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Surface Area of a Cube (total) | S = 6s to the 2nd power
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Surface Area of a Prism (lateral) | S = Ph
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Surface Area of a Prism (total) | S = Ph + 2B
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Surface Area of a Pyramid (lateral) | S = 1/2Pl
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Surface Area of a Pyramid (total) | S = 1/2Pl + B
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Surface Area of a Cylinder (lateral) | S = 2πrh
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Surface Area of a Cylinder (total) | S = 2πrh + 2πr to the 2nd power or
S = 2πr(h + r)
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Pythagorean Theorem | a to the 2nd power + b to the 2nd power = c to the 2nd power
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Simple Interest Formula | I = prt
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1 kilometer | 1000 meters
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1 meter | 100 centimeters
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1 centimeter | 10 millimeters
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1 mile | 1760 yards
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1 mile | 5280 feet
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1 yard | 3 feet
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1 foot | 12 inches
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1 liter | 1000 milliliters
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1 gallon | 4 quarts
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1 gallon | 128 fluid ounces
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1 quart | 2 pints
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1 pint | 2 cups
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1 cup | 8 fluid ounces
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1 kilogram | 1000 grams
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1 gram | 1000 milligrams
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1 ton | 2000 pounds
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1 pound | 16 ounces
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1 year | 365 days
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1 year | 12 months
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1 year | 52 weeks
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1 week | 7 days
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1 day | 24 hours
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1 hour | 60 minutes
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1 minute | 60 seconds
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
masonteach
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