M for multiply, A for add, and D for denominator. Then, using the example, walk students through each step: multiply the whole number by the denominator, add the numerator, and keep the denominator the same. When they forget, all you have to say is “Make it MAD!”
Use a hundred chart to help students count coins. Have students place coins on the correct number. For instance, given 3 dimes and 1 nickel, students would place dimes on 10, 20, 30 and the nickel on 35. The last coin tells students how much money they have altogether.