If the signs of both numbers are alike, (both positive or both negative) add the two numbers and...
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![Page 1: If the signs of both numbers are alike, (both positive or both negative) add the two numbers and keep the same sign as in the original problem. Example:](https://reader036.fdocuments.us/reader036/viewer/2022072010/56649daf5503460f94a9d6c7/html5/thumbnails/1.jpg)
INTEGERS: adding, subtracting,
multiplying, and dividing
![Page 2: If the signs of both numbers are alike, (both positive or both negative) add the two numbers and keep the same sign as in the original problem. Example:](https://reader036.fdocuments.us/reader036/viewer/2022072010/56649daf5503460f94a9d6c7/html5/thumbnails/2.jpg)
If the signs of both numbers are alike, (both positive or both negative) add the two numbers and keep the same sign as in the original problem.
Example: -4 + -8 = -12 Example: 5 + 8 = 13
ADDING LIKE SIGN INTEGERS
![Page 3: If the signs of both numbers are alike, (both positive or both negative) add the two numbers and keep the same sign as in the original problem. Example:](https://reader036.fdocuments.us/reader036/viewer/2022072010/56649daf5503460f94a9d6c7/html5/thumbnails/3.jpg)
If the signs are different, (one sign is positive and one sign is negative) subtract the two numbers without the signs and keep the sign of the number farthest from zero.
Example: -10 + 4 = Example: 14+ -18 = Example: -7 + 12 = Example: 14 + -3 = Example: -4 + 4 =
Adding Unlike Sign Integers
![Page 4: If the signs of both numbers are alike, (both positive or both negative) add the two numbers and keep the same sign as in the original problem. Example:](https://reader036.fdocuments.us/reader036/viewer/2022072010/56649daf5503460f94a9d6c7/html5/thumbnails/4.jpg)
You practice:
![Page 5: If the signs of both numbers are alike, (both positive or both negative) add the two numbers and keep the same sign as in the original problem. Example:](https://reader036.fdocuments.us/reader036/viewer/2022072010/56649daf5503460f94a9d6c7/html5/thumbnails/5.jpg)
1. Change subtraction sign to addition. 2. Change the sign of the second integer to
the opposite sign. (If it is negative, make it positive.)
3. Follow addition rules. Example: -5 – 12 = Example: -10 - -13 = Example: 13 – 17 = Example: -11 - -11 =
Subtracting Integers
![Page 6: If the signs of both numbers are alike, (both positive or both negative) add the two numbers and keep the same sign as in the original problem. Example:](https://reader036.fdocuments.us/reader036/viewer/2022072010/56649daf5503460f94a9d6c7/html5/thumbnails/6.jpg)
You practice:
![Page 7: If the signs of both numbers are alike, (both positive or both negative) add the two numbers and keep the same sign as in the original problem. Example:](https://reader036.fdocuments.us/reader036/viewer/2022072010/56649daf5503460f94a9d6c7/html5/thumbnails/7.jpg)
Multiplying Integersand Dividing Integers
![Page 8: If the signs of both numbers are alike, (both positive or both negative) add the two numbers and keep the same sign as in the original problem. Example:](https://reader036.fdocuments.us/reader036/viewer/2022072010/56649daf5503460f94a9d6c7/html5/thumbnails/8.jpg)
1. Multiply or divide the two numbers. 2. If both signs are positive, make answer positive. 3. If both signs are negative, make answers positive.Example: -3 · -6 =Example: -7(-4) =Example: (3)(4) =Example: (-9)(0) =
Example: -40 ÷ -10 = Example: -30/-3 = Example: 14/2 =
Multiplying or dividing like sign integers
![Page 9: If the signs of both numbers are alike, (both positive or both negative) add the two numbers and keep the same sign as in the original problem. Example:](https://reader036.fdocuments.us/reader036/viewer/2022072010/56649daf5503460f94a9d6c7/html5/thumbnails/9.jpg)
Multiply or divide the two numbers. Because one of the numbers is positive and one
of the numbers is negative the answer will be negative.
Example: -8(4)= Example: 7 · -3 = Example: (-2)(6) =
Example: -28 ÷ 7 = Example: 20/-4 = Example: -45/ 9 =
Multiplying or Dividing Unlike Signs
![Page 10: If the signs of both numbers are alike, (both positive or both negative) add the two numbers and keep the same sign as in the original problem. Example:](https://reader036.fdocuments.us/reader036/viewer/2022072010/56649daf5503460f94a9d6c7/html5/thumbnails/10.jpg)
You practice:
![Page 11: If the signs of both numbers are alike, (both positive or both negative) add the two numbers and keep the same sign as in the original problem. Example:](https://reader036.fdocuments.us/reader036/viewer/2022072010/56649daf5503460f94a9d6c7/html5/thumbnails/11.jpg)
1. (-8)(-3) =2. -42/-6 =3. 9(-6) =4. -14/-2 =5. (0)(-14) =6. 20/-4 =
Multiplication/Division Practice
![Page 12: If the signs of both numbers are alike, (both positive or both negative) add the two numbers and keep the same sign as in the original problem. Example:](https://reader036.fdocuments.us/reader036/viewer/2022072010/56649daf5503460f94a9d6c7/html5/thumbnails/12.jpg)
1. -8 + 14 = 2. 24 - -6 =3. -8 (-7) = 4. -7 + -11 = 5. -13 - -19 = 6. 24/-4 =7. -30 + 12 =8. -45 - -45 =9. (-3)(-6) = 10. -6 – 4 =
Practice the following 10 problems and have Mrs. Jennings check them: