Number line
A number line is a one-dimensional graph. It is often used as an aid in teaching simple addition or subtraction in school, and can also help with the idea of subtracting a larger number from a smaller one to obtain a negative number.
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A number line is a one-dimensional graph. It is often used as an aid in teaching simple addition or subtraction in school, and can also help with the idea of subtracting a larger number from a smaller one to obtain a negative number.