В корзине пусто!
1 point per correct answer; no points are deducted for incorrect or blank answers.
Build your mental arithmetic. Never use a calculator during practice sessions for Target or Sprint rounds. Memorize squares up to 40, cubes up to 20, and the decimal equivalents of common fractions.
To succeed in the Sprint Round, you need a mental toolbox filled with shortcuts and strategies. Here are the most common problem categories, each with a sample problem and solution that demonstrates the kind of clever thinking required.
P0=15P0+45P1cap P sub 0 equals one-fifth cap P sub 0 plus four-fifths cap P sub 1 Multiply the entire equation by 5:
is expressed in base 9, find the number of trailing zeros and the last non-zero digit. Find the value of are positive integers satisfying Recommended Solution Guides
