Operations with Integers Integrated Mathematics

Addition Rules Positive + Positive = Positive Negative + Negative = Negative Positive + Negative or Negative + Positive Subtract & Take Sign of Number Further from Zero

Addition Rules When the signs are the SAME Add and keep the Same Sign When the signs are DIFFERENT Subtract and keep the sign of the number further from ZERO

Adding Integers Ex.1) −𝟑+𝟓 Ex.2) −𝟒+(−𝟓) Ex.3) −𝟒+𝟗 Ex.4) −𝟓+𝟐

Adding Integers Ex.5) −𝟏𝟐+(−𝟕) Ex.6) 𝟏𝟑+(−𝟕) Ex.7) −𝟏𝟓+𝟏𝟎 Ex.8) −𝟏𝟐+𝟐𝟓

Practice -4 + 10 6) 9 + (-16) 5 + (-2) - 8 + (-8) -3 + (-7) 13 + 0 5 + (-5) - 12 + 7 6) 9 + (-16) - 8 + (-8) 13 + 0 - 15 + 4 11 + (-6)

Subtraction Rules Ex.11) −𝟑−𝟒 Ex.12) −𝟖−(−𝟓) Ex.13) −𝟒−(−𝟔) Ex.14) 𝟐−𝟔 Use Addition Rules Make two minus signs into a plus sign Ex.11) −𝟑−𝟒 Ex.12) −𝟖−(−𝟓) Ex.13) −𝟒−(−𝟔) Ex.14) 𝟐−𝟔

Subtracting Integers Ex.15) 𝟒−𝟗 Ex.16) 𝟔−(−𝟒) Ex.17) −𝟒−𝟏𝟕

Rules for Multiplication/Division When the signs are Different, the answer is Negative. When the signs are THE SAME the answer is Positive. RULES + -

Multiplying Integers Ex.19) 8(− 5) Ex.20) (−𝟕)∙𝟓 Ex.21) (−𝟑)(−𝟒)

Dividing Integers Ex.25) 15÷ −3 Ex.26) −21÷(−7) Ex.27) −44 −11