Students love decoding secret messages as they do math problems, and teachers love the instant feedback and reduced grading overhead. In this 24-page book, late elementary school students and middle school students find number patterns, examine operations with even and odd numbers, and estimate products, sums, and differences. Students also add and multiply with decimals, add and multiply fractions, find missing parts of fraction equations, and convert improper fractions to mixed numbers. In addition they analyze tree graphs, find percent increase, find LCMs (Least Common Multiples), examine lines of symmetry, find chance (probability), and solve proportions. Finally, they measure line segments using both U.S. and metric units.