Background
Integers = {..., 3, 2, 1, 0, 1, 2, 3, ...}
Addition Rules
Same signs: Add the absolute values and use the
common sign.
Different signs: Subtract the lesser absolute value
from the greater absolute value.
Use the sign of the number with the
greater absolute value.
Subtraction Rule
To subtract an integer, add its opposite.
Multiplication and Division Rules
Same signs: The product/quotient is positive.
Different signs: The product/quotient is negative.

WarmUp
matches
3
â€œThe gray squares represent negative integers and
the white squares represent positive integers.
has a greater absolute value, so the answer is
negative. And so the answer is â€
WarmUp
2  (3 ) matches 5.
â€œWhen you add the opposite, you have 2 + 3 = 5.â€
WarmUp
3(4) matches 12
â€œThe signs are different, so the answer will be
negative. Because 3 Ã— 4= 12, the answer is 12.â€
