CPM Homework Help : MC2 Problem 4-22

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4-22.

Copy and simplify each expression.

$7 + (-3)$
Hint (a):
When you add a negative number, you are essentially subtracting it.

$(10)(-5)$
Hint (b):
A positive number multiplied by a negative number is always a negative number.
Answer (b):
$-50$

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

$(-2) ÷ (-2)$
Hint (d):
When you divide a number by itself, the quotient is $1$ .
Answer (d):
$1$

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