# math

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The carpenter bought a 16 foot board. He cut off three pieces: 3 feet 4 inches, 2 feet 10 inches, and 6 feet 8 inches. How much board does he have left?

• math -

3'4" + 2"10" + 6'8" = 11'22" = 12'10"

16" = 15'12", so the amount left is

15'12" - 12'10" = 3'2"

• math -

1 ft = 12 in

2 ft = 24 in

6 ft = 72 in

16 ft = 192 in

3 ft + 4 in + 2 ft + 10 in + 6 ft 8 in =

36 + 4 + 24 + 10 + 72 + 8 = 154 in

16 ft - 154 in = 192 in - 154 in =

38 in =

36 in + 2 in =

3 ft 2 in

• math -

if 3 1/2 inches are cut off one end of an 8-foot length of lumber, what length remains

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