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Gabe is mapping out important family events. He uses negative numbers to represent time before he was born and positive numbers to represent time after he was born. For example, Gabe's mom was given a special coin in year -20 , and Gabe's sister was born in year 7.
What does year 0 represent?
Choose 1 answer:
A The year Gabe's mom was given a special coin
(B) The year Gabe was born
(c) The year Gabe's sister was born

Gabe is mapping out important family events. He uses negative numbers to represent time before he was born and positive numbers to represent time after he was born. For example, Gabe's mom was given a special coin in year $-20$ , and Gabe's sister was born in year $7$ . $\newline$ What does year $0$ represent? $\newline$ Choose $1$ answer: $\newline$ (A) The year Gabe's mom was given a special coin $\newline$ (B) The year Gabe was born $\newline$ (C) The year Gabe's sister was born

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Quantities that combine to zero: word problems

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Q. Gabe is mapping out important family events. He uses negative numbers to represent time before he was born and positive numbers to represent time after he was born. For example, Gabe's mom was given a special coin in year

-20

, and Gabe's sister was born in year

7

.

\newline

What does year

0

represent?

\newline

Choose

1

answer:

\newline

(A) The year Gabe's mom was given a special coin

\newline

(B) The year Gabe was born

\newline

(C) The year Gabe's sister was born

Negative and Positive Numbers: Gabe uses negative numbers to represent time before he was born and positive numbers to represent time after he was born. Since year $0$ is neither negative nor positive, it represents the point of transition between the two.
Year $-20$ : Special Coin: Year $-20$ represents a time before Gabe was born, specifically when his mom was given a special coin. This is not year $0$ .
Year $7$ : Gabe's Sister: Year $7$ represents a time after Gabe was born, specifically when his sister was born. This is not year $0$ .
Year $0$ : Gabe's Birth: By the given information, year $0$ cannot be the year Gabe's mom was given a special coin (year $-20$ ) or the year Gabe's sister was born (year $7$ ). Therefore, year $0$ must represent the year Gabe was born, as it is the reference point from which he measures other events.

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