Question

Place these values in order, from smallest to largest length. Show your work.

Answer 1

Explanation:

• 9 feet
• 10 feet (10 ft = 10·12 in = 120 in)
• 130 inches
• 12 feet (12 ft = 12·12 in = 144 in)
• 145 inches

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Obviously, 9 < 10 < 12, so ordering by feet is easy. Then we need to figure out where the inch measurements belong.

1 foot = 12 inches, so we can figure some references to use to compare to the inch measurements.

  10 feet = 10·12 in = 120 in, so 130 in is longer, by less than 1 ft.

  12 feet = 12·12 in = 144 in, so 145 in is longer.