Course 1 A black bear is about 5 ft long. An Alaskan brown bear is about 7 ft tall. How much taller is an Alaskan brown bear than a black bear? Subtracting Mixed Numbers LESSON Subtract the whole numbers. Then subtract the fractions To calculate the difference in heights, find 7 – An Alaskan brown bear is 2 ft taller than a black bear Check for Reasonableness Round each mixed number: 7 8; 5 5. Then subtract: 8 – 5 = 3. The answer 2 is close to the estimate. So, the answer is reasonable – The LCD is 4. Write as – Additional Examples

Course 1 Subtracting Mixed Numbers LESSON 5-5 Find 9 – Write 9 as a mixed number. Use 3 for the denominator since you must subtract Rename 9 as = 8 +, or – Then subtract the fractions Subtract the whole numbers. – 1 Additional Examples

Course 1 Subtracting Mixed Numbers LESSON 5-5 A two-week-old panda bear weighed pound. At age one month, the cub weighed 2 pounds. How many pounds did it gain? Subtract Check for Reasonableness The answer 1 is close to the estimate of The panda bear gained 1 pounds – The LCD is 20. Write as The LCD is 20. Write as To answer the question, find 2 – Since <, rename 2. Estimate 2 – 2 – 1 = Rename 2 as = 1 +, or Additional Examples