Distinguish between prime and composite numbers. Use prime factorizations to determine the least common multiple of a set of numbers. Use prime factorizations to determine the greatest common factor of a set of numbers. Apply factors and multiples to solve problems. Apply scientific notation to solve problems involving very large and very small numbers.
Students solve proportional reasoning problems including percent applications and scale drawings.
Distinguish between proportional and nonproportional relationships. Use proportional and algebraic processes to solve proportional reasoning problems. Solve problems involving sales tax, discount, tip, and simple interest. Solve problems involving compound interest. Determine the size of the image or preimage of a scale drawing.