MATH REFERENCE SHEET – GRADE 7
R= radius b= base w = width
d = diameter h = height l = length
Use 3.14 for π
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SHAPE AREA CIRCUMFERENCE
Circle A = πr² C = πd = 2πr
Triangle A = 1/2bh
Rectangle A = lw
Trapezoid A = 1/2h (b1 + b2)
Parallelogram A = bh
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3 DIMENSIONAL SHAPE Volume
Rectangular Prism V = lwh
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FORMULAS
Distance, rate and time
D = distance r = rate t = time
D = rt
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Simple Interest
P = principal r = rate t = time
I = prt
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CONVERSIONS:
1 yard (yd) = 3 feet (ft) = 36 inch (in)
1 mile (mi) = 1,760 yards (yd) = 5,280 feet (ft)
1 cup = 8 fluid ounces (fl oz)
1 pint (pt) = 2 cups
1 quart (qt) = 2 pints (pt)
1 gallon (gal) = 4 quarts (qts)
1 pound (lb) = 16 ounces (oz)
1 ton (T) = 2000 pounds (lbs)
1 meter (m) = 100 centimeter (cm)
1 meter (m) = 1000 millimeter (mm)
1 kilometer (km) = 1000 meter (m)
1 liter (l) = 1000 milliliter (ml)
1 liter (l) = 1000 cubic centimeter (cu cm)
1 gram (g) = 1000 milligram (mg)
1 kilogram (kg) = 1000 gram (g)