9.4/9.5 Add and Subtract Mixed Numbers. The “Bird Problem” A flock of birds is migrating from Canada to Florida for the winter. One day they fly 2 and.

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Presentation transcript:

9.4/9.5 Add and Subtract Mixed Numbers

The “Bird Problem” A flock of birds is migrating from Canada to Florida for the winter. One day they fly 2 and 3/4 hours before stopping to rest. Then they fly 1 and 1/6 more hours. For how long do the birds fly? Discuss with your partner TWO different ways this problem can be solved.

Estimation Practice Solve 1 and 1/2 minus 1 and 1/10. Solve 18 and 9/10 minus 13 and 2/5. How are adding and subtracting mixed numbers similar?

Independent Practice Write the sum or difference in simplest form: – 1 5/ /4 –7 3/ /5 –5 5/ /9 –4 1/ /4

Rename to Subtract

Carrying Carrying involves carrying the fraction equivalent of 1 to the whole number part of the mixed number. 3 3/ /5 4 3/ /8 6 4/ /7

Borrowing Borrowing involves borrowing the fraction equivalent of 1 from the whole number part of the mixed number 7 3/ /5 8 5/ /8 9 3/ /10

Independent Practice Solve: – /10 – /5 –p. 193 (9-17 only - show all work)