LESSON 2 Operations on a Number Line

Professor Peabody is watching a +2 constant hopper on the number line.

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1. Describe the numbers a +2 hopper lands on when it starts at 0 on the number line.
2. What multiplication number sentence describes the trip for a +2 hopper that starts at 0 and hops 7 times?

Professor Peabody wonders, “What would happen if a constant hopper started somewhere other than zero on the number line?” He watches the hops of a +2 hopper when it starts at 1 on the number line.

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1. Describe the numbers a +2 hopper will land on when it starts at 1 on the number line.
2. If the +2 hopper starts at 1 on the number line and hops 7 times, where will it land?

Professor Peabody wants to write a number sentence to describe the +2 hopper's trip. He thinks about what each number means and then writes:

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