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Evaluate each expression.

$7+(-3)$
Hint (a):
Which one has the greater absolute value? That determines the sign of the answer.
Answer (a):
$4$

$(10)(-5)$
Hint (b):
If there is one negative in a multiplication problem, the answer will be negative

$-5+6$
Hint (c):
See part (a).

$(-2)\div(-2)$
Hint (d):
Division rules for the signs are the same as multiplication
Answer (d):
$1$

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