Operating on mixed numbers combines students’ knowledge of addition and subtraction, converting wholes to fractions, converting mixed numbers to improper fractions, and regrouping. In this activity, students will practice adding and subtracting mixed numbers using visuals to aid their computations. To convert a mixed number to an improper fraction, first multiply the whole num-ber by the denominator or bottom number of the fraction. Add the numerator or top number to the product. The sum is the new numerator in your improper fraction. Keep the denominator the same. To multiply mixed numbers, first convert the mixed numbers to improper fractions.
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Tell Group B to work together to convert the mixed number 2 1 ⁄ 3 into an improper fraction. Distribute chart paper to each group and have them draw visuals and show their work. Then, ask them to write out a step-by-step explanation of their process. Encourage them to use the sequencing words written on the board.