The document discusses integers and the number line. It introduces addition and multiplication rules for integers. - Integers include whole numbers and their opposites, and are represented on the number line. - For addition, the sign of the sum is the same as the signs of the addends if they are the same, and follows the sign of the larger addend if the signs are different. - For multiplication, the product is positive if the factors have the same sign and negative if the signs are different.

1. INTEGERS

12. 1) If the problem is addition, follow your addition rule. 2) If the problem is subtraction, change subtraction to adding the opposite ( keep-change-change ) and then follow the addition rule. Review

13. Multiplying Rules 1) If the numbers have the same signs then the product is positive . (-7) • (-4) = 28 2) If the numbers have different signs then the product is negative . (-7) • 4 = -28

17. Dividing Rules 1) If the numbers have the same signs then the quotient is positive . -32 ÷ (-8 )= 4 2) If the numbers have different signs then the quotient is negative . 81 ÷ (-9) = -9