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8th Grade STAAR Math

Formulas, definitions, and concepts related to the 8th Grade Math STAAR test.

Area of a circle pi x radius^2
Circumference length around a circle
pi ratio of circumference to diameter
"of" means multiply with fractions/decimals/percents
"is" means equals
When racing, the _____________________ time is the fastest. Lowest
Ordering decimals ... 1. Re-write numbers lined up on decimal points. 2. Place zeros (if needed) 3. Compare one number at a time.
Adding & Subtracting Decimals 1. Line up numbers on their decimal points 2. Place zeros (if needed) 3. Add or subtract normally (borrow/regroup if needed) 4. Bring the decimal down.
Created by: ryan.peterson