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Adding and Subtracting Measurement

Adding and Subtracting Measurement. Chapter 6 Section 12. How do we add measurement?. Example: 4 ft 7 in + 2 ft 10 in Add like normal 6 ft 17 in 17 inches? We can’t have that since 17 inches is bigger than 12 inches. See our BFF just to be sure.

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Adding and Subtracting Measurement

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  1. Adding and Subtracting Measurement Chapter 6 Section 12

  2. How do we add measurement? • Example: 4 ft 7 in • + 2 ft 10 in • Add like normal 6 ft 17 in • 17 inches? We can’t have that since 17 inches is bigger than 12 inches. See our BFF just to be sure. • Change 17 inches into feet and inches • Take 17 ÷ 12 and find a remainder. • So 1 ft 5 in and add that to 6 ft • 6 ft • + 1 ft 5 in • 7 ft 5 in

  3. What about subtraction? • Example: 11 ft 6 in • - 2 ft 8 in • Can we subtract 6 and 8? • We need to borrow! How many do we borrow? • Right we have to borrow 12 inches since we are taking it from 1 foot! • Add the 12 inches to the 6 inches there • And now subtract like normal!

  4. Let’s try some together • 1) 8 ft 4 in 2) 11 ft 5 in+ 7 ft 11 in- 9 ft 10 in

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