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1-1 Solve. DINNER Valerie’s family ordered a large pizza for dinner. The pizza was cut into 12 pieces. Valerie and her sister each had 2 pieces of pizza and her mom and dad each had 3 pieces. What fraction of the pizza was left? Understand Read the problem. Write what you know. Valerie and her sister each had 2 pieces. Her mom and dad each had 3 pieces. 1-1 Plan Pick a strategy. One strategy is to draw a picture. Draw a circle divided into 12 equal sections. Shade in 4 sections to represent the number of pieces Valerie and her sister had and 6 sections to represent the number of pieces her mom and dad had. 1-1 Solve The total number of sections in the circle is 12. This is the number for the whole. It is the denominator of the fraction. Count the number of unshaded sections in the circle. This is the number for the part. It is the numerator of the fraction. 1-1 Check Look at the numbers in the problem. Does the solution answer the question? Is it reasonable?