The card games that test mental math skills and calculator skills!Fast-paced, exciting card games that build and practice students’ mental math, calculator,estimation, problem solving, and communication skills. Increased work with all these skills is recommended by the NCTM standards.Points are scored by using the named keys on the calculator card face to reach the target number at the top of the card by using the quickest method. 100 double-sided game cards,instructions, sample cards with solutions, and game variations with each set.