Chapter 6Section 12

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

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!

1) 8 ft 4 in 2) 11 ft 5 in + 7 ft 11 in - 9 ft 10 in