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489 - 2 = 487
489.
If when you say "7 down" if you mean -7, the answer would be -489
1, 3, 163, 489
No because its odd
244.5
The GCF of 489 and 1,000 is 2.
-2 - 2 = -4
489 squared is 239,121.
It is -489.
-2
(-7) - 5 - 2 = -14
The answer is -8