This puzzle gives students plenty of practice to master the addition and subtraction of fractions. It is more fun and less stressful than a traditional math worksheet. For the earlier grades, the fractions may have the same denominators. Students can directly add or subtract the numerators, and the result will have the denominator of the original fractions. Once they master the easier sheets, try the harder grades for fractions with different denominators. Students find the least common denominator (LCD) and convert each fraction to the equivalent fraction with the LCD; then, they can solve for the missing fraction.