➖ Negative numbers and the number line

Unit 3 · Numbers & functions · 9 min

On a number line, positives are right of 0 and negatives left. −3 is less than −1 because it is further left. Adding a negative moves left: 5 + (−3) = 2. Temperatures and altitudes use negatives.

Words in this lesson

• 负数 (fù shù) — negative number
• 数轴 (shù zhóu) — number line

Project: Draw a number line from −10 to 10 and mark a cold city's daily lows for a week.