Mathfinity · 2.4 Negative Numbers

2.4 · Negative Numbers

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Numbers below zero are negative. On a number line, moving right means adding; moving left means subtracting.

−4 + 7 = 3

Start at −4 and move 7 places to the right.

3 − 8 = −5

Start at 3 and move 8 places to the left.

Remember: subtracting a negative number is the same as adding its positive value.

5 − (−2) = 7

✏️ Exercise · No points

Question 1

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