In 4th/ 5th Number Sense, students will be given a 10-minute, fill-in-the-blank test which they must complete without doing calculations on paper or on a calculator. Erasures and mark-outs are not permitted.Videos:
Converting Numbers from Base 10 to Other Bases
Square Root in 3 Seconds
Percentages Makes Easy--Fast Shortcut Trick!
Find Average-Mental Math
Secrets about Fraction