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Fill in the blank in negative one minus five equals blank.
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This is a subtraction problem.
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And on a number line, we represent subtraction by going to the left.
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Our starting point is negative one because we’re dealing with subtraction.
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We know we’ll be moving to the left.
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We’re subtracting five units, and that means we need to move to the left five times.
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Five units to the left of negative one is at negative six.
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Negative one minus five is negative six.