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Algebra Difficulty 1.1 Junior Find the answer Canada

In the diagram, the number line between $0$ and $6$ is divided into $12$ equal parts. The numbers $M$ and $N$ are marked on the line.The value of $N-M$ is

Pick one

Solution

Since the number line between $0$ and $6$ is divided into $12$ equal pieces, then each piece has length $\dfrac{6}{12}=0.5$ . The location of $M$ is $2$ such pieces right of $0$ , and so the value of $M$ is $2\times0.5=1.0$ . The location of $N$ is $3$ such pieces left of $6$ , and so the value of $N$ is $6-(3\times0.5)=4.5$ . The value of $N-M=4.5-1.0=3.5$ .

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Source: CEMC, University of Waterloo, licensed CC-BY-NC-4.0. Statement reproduced verbatim; metadata (topic, difficulty) added by this project.