OPTIMUM FOR ELEMENTARY MATH DEMOS
ELEMENTARY MATH – Grade 3 Drill – Number & Operations The Maxwell brothers have three times as many lawn cutting jobs as the Jackson brothers. If the Maxwell brothers have 9 lawn cutting jobs, how many jobs do the Jackson brothers have?
ELEMENTARY MATH – Grade 4 Standards – Algebra & Patterns Flood level for the Big River is 50 feet. One day last spring, the river level was 48 feet at 1:00 P.M., and Big River's level was rising at a constant rate of 1 foot every 2 hours. At what time did Big River reach flood level?
ELEMENTARY MATH – Grade 5 Standards – Data Analysis & Probability In a regular deck of 52 cards, there are twentysix red cards and twentysix black cards. Thirteen of the red cards are hearts and the other thirteen red cards are diamonds. Thirteen of the black cards are clubs and the other thirteen black cards are spades. If a person pulls one card out of the deck without looking, what is the probability that it will be a heart?
