1 / 12

INTEGERS: adding, subtracting, multiplying, and dividing

INTEGERS: adding, subtracting, multiplying, and dividing. ADDING LIKE SIGN INTEGERS. 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.

mardi
Download Presentation

INTEGERS: adding, subtracting, multiplying, and dividing

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. INTEGERS: adding, subtracting, multiplying, and dividing

  2. ADDING LIKE SIGN INTEGERS • 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

  3. Adding Unlike Sign Integers • 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 =

  4. You practice:

  5. Subtracting Integers • 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 =

  6. You practice:

  7. Multiplying Integersand Dividing Integers

  8. Multiplying or dividing like sign integers • 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 =

  9. Multiplying or Dividing Unlike Signs • 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 =

  10. You practice:

  11. Multiplication/Division Practice • (-8)(-3) = • -42/-6 = • 9(-6) = • -14/-2 = • (0)(-14) = • 20/-4 =

  12. Practice the following 10 problems and have Mrs. Jennings check them: 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 =

More Related