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These number lines have different scales:
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-4 -3 -2 -1 0 1 2 3 4
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-8 -6 -4 -2 0 2 4 6 8
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-25 -20 -15 -10 -5 0 5 10 15 20 25
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-3000 -2000 -1000 0 1000 2000 3000
Edwin