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Sam and Elizabeth wanted to know how long the hallway is at their house. They decide to use a 12 inch ruler to measure
the length of the hallway. Before measuring, they decide to make a prediction to see who is correct. Sam predicts that
the hallway is 20 feet long, and Elizabeth predicts that the hallway is 10 feet long. They measure the length of the hallway,
and it is 18 feet long. What MOST LIKELY helped Sam make a closer prediction?
√x
x
x
A
B
C
D
It was his lucky day, and he made a lucky guess.
He had secretly measured the hallway before.
Everyone knows how long a hallway is.
He tried to picture how many rulers might fit down the hallway.
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