Integers

The Number Line ,[object Object],[object Object],[object Object],-5 0 5

Addition Rule ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Karaoke Time! ,[object Object],[object Object],[object Object]

-1 + 3 = ? ,[object Object],[object Object],[object Object],[object Object],Answer Now

-6 + (-3) = ? ,[object Object],[object Object],[object Object],[object Object],Answer Now

The additive inverses (or opposites ) of two numbers add to equal zero. ,[object Object],[object Object],[object Object],Example : The additive inverse of 3 is

What’s the difference between 7 - 3 and 7 + (-3) ? ,[object Object],[object Object],[object Object],[object Object]

When subtracting, change the subtraction to adding the opposite ( keep - change - change ) and then follow your addition rule. ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Which is equivalent to -12 – (-3)? ,[object Object],[object Object],[object Object],[object Object],Answer Now

7 – (-2) = ? ,[object Object],[object Object],[object Object],[object Object],Answer Now

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

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

When multiplying two negative numbers, the product is negative. ,[object Object],[object Object],Answer Now

When multiplying a negative number and a positive number, use the sign of the larger number. ,[object Object],[object Object],Answer Now

Multiply: (-3)(4)(2) ,[object Object],[object Object],[object Object],[object Object],Answer Now

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

When dividing two negative numbers, the quotient is positive. ,[object Object],[object Object],Answer Now

When dividing a negative number and a positive number, use the sign of the larger number. ,[object Object],[object Object],Answer Now

What is the quotient of -21 ÷ -3? ,[object Object],[object Object],[object Object],[object Object],Answer Now

What is the quotient of -24 ÷ 6? ,[object Object],[object Object],[object Object],[object Object],Answer Now

Integers

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