Topic content:
An ant starts from the origin O, first crawls 4 units to the right to reach point A, then crawls 2 units to the right to reach point B, and then crawls 7 units to the left to reach point C, writing the numbers represented by A, B, and C: point A represents number (), point B represents number (), and point C represents number
Best answer:
4,6,﹣1
Answer analysis:
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Test core:
Definition of number axis: a straight line specifying the unique origin, positive direction and unit length is called number axis. The number axis has three elements: origin, positive direction and unit length, which are indispensable. The number axis is a straight line that can extend infinitely to both sides, so all rational numbers can be represented by points on the number axis.