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Click the mouse button or press the Space Bar to display the answers. Objective To subtract integers Vocabulary None Subtraction Rule # 1 4 - 7 4 + -7 Separate numbers with sign in front of number Place a positive sign between them, then follow the addition rules Subtraction Rule # 2 4 - (-7) Combine the 2 negative signs to make a positive 4 + 7 Follow the addition rules Example 1 Subtract a Positive Integer Example 2 Subtract a Positive Integer Example 3 Subtract a Negative Integer Example 4 Subtract a Negative Integer Example 5 Evaluate Algebraic Expressions Example 6 Evaluate Algebraic Expressions Find 2 - 6 2 + - 6 Different Write problem Separate numbers with sign in front of number Place a positive sign between them, then follow the addition rules Draw arrows to the signs Determine if the signs are the same or different 1/6 Find 2 - 6 2 + - 6 Different Different signs, subtract the numbers without the signs 6-2 (Remember: big number small number) Keep sign of largest number which is negative -4 Answer: - 4 1/6 Find Answer: - 4 1/6 Find -7 - 5 -7 + -5 Same Write problem Separate numbers with sign in front of number Place a positive sign between them, then follow the addition rules Draw arrows to the signs Determine if the signs are the same or different 2/6 Find -7 - 5 Same sign, add the numbers without the signs 7 + 5 Keep the sign which is - -7 + -5 Same - 12 Answer: - 12 2/6 Find Answer: - 8 2/6 Write problem Find 11 - ( - 8 ) 11 + 8 Same 19 Answer: 19 Combine the negative signs and make a positive sign Draw arrows to the signs Determine if the signs are the same or different Same sign, add the numbers without the signs 11 + 8 Keep the sign which is + 3/6 Find Answer: 18 3/6 Write problem Find -6 - (-9) -6 + 9 Different Combine the negative signs and make a positive sign Draw arrows to the signs Determine if the signs are the same or different 4/6 Different signs, subtract the numbers without the signs 9 - 6 Find -6 - (-9) (Remember: big number small number) -6 + 9 Different Keep sign of largest number which is negative 3 Answer: 3 4/6 Find Answer: 4 4/6 Evaluate 12 - r Write problem 12 - ( - 7 ) Bring down 12 - 12 + 7 Replace r with - 7 Same Combine the negative signs and make a positive sign Draw arrows to the signs Determine if the signs are the same or different 5/6 Evaluate 12 - r 12 - ( - 7 ) 12 + 7 Same sign, add the numbers without the signs 12 + 7 Keep the sign which is + Same 19 Answer: 19 5/6 Evaluate Answer: 12 5/6 Evaluate q - p Write problem -3 - 6 Replace q with - 3 -3 + - 6 Bring down the - sign Replace p with 6 Separate numbers with sign in front of number Place a positive sign between them, then follow the addition rules 6/6 Evaluate q - p Draw arrows to the signs -3 - 6 Determine if the signs are the same or different -3 + - 6 Same -9 Same sign, add the numbers without the signs 3 + 6 Keep the sign which is - Answer: - 9 6/6 * Evaluate Answer: - 9 6/6 Assignment Lesson 1:5 Subtracting Integers 12 - 41 All