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Before you sit down make sure you have all your supplies! Answer the following questions in your notebook 1. 65.7 ÷ 4.56 2. 34.2 ÷ 2.5 3. 786 × 23 4. 89.9 × 5.5 5. 76.98 × 5.4 What is one good thing that happened this weekend? Team leaders come get glue sticks and papers for each of your teammates Everyone glue your KIM sheets in your notebook. Additive inverse, integers, negative and positive integers, rational numbers K Key Idea/Vocabulary Word I Information/ Definition M Memory Clue Additive inverse: What you add to a number to get zero or the negative of the number. Integers: A whole number that is not a fraction Negative Integers: A whole number to the left of the zero on a the number line and less than zero Positive Integers: A whole number to the right of the zero on the number line and more than zero. Rational Number: A number that can be written as a ratio or a fraction. Number Additive Inverse (opposite) Number Additive Inverse (opposite) Examples: What is the additive inverse? 3 + ____ = 0 What is the additive inverse? -67 + ____ = 0 Examples: Do these examples use an additive inverse ? 1) Elsa has $400 in her savings account. She bought a laptop for $400 with the money in her savings account. 2) The boys club hiked at an elevation of 590 feet above sea level. The they hiked down 480 to a spot to camp for the day. 3) It was 32 degrees outside and a cold front came through just before sunset and it dropped 32 degrees. Do problems on 1) What is the additive inverse of ⅚? 2) What is the additive inverse of -12/13? 3) If Joey had ¾ of a piece of cake on the table and he ate ¾ of a piece of cake. How much cake is left? Is this an additive inverse? 4) Nancy ran 5/12 of a mile this morning, then ran 3/12 back the way she came. Did Nancy make it back home? Is this an additive inverse? Page 17 (Please have your team leaders come get the homework for each team member) Before you sit down make sure you have all your supplies! Answer the following questions in your notebook 1. What is the additive inverse of -8? 2. What is the additive inverse of 109? 3. What is the additive inverse of -17/18? 4. Jake threw the ball 14 yards and it bounced 3 yards back. Is this an additive inverse? 5. Jacey walked 16/17 of a mile to the park from her home. Then she turned around and walked back home. Is this an additive inverse? What is one good thing that happened yesterday? 1) 5 + -9 = 2) 123 + -100 = 3) -8 + 20 = 4) -4 + -23 5) -19 + 20 = 6) 20 + -30 = 1) 7/12 + -¾ = ⅔ 2) -8/9 + = 3) - ½ + 4/10 = None Before you sit down make sure you have all your supplies! Answer the following questions in your notebook 1. 8 + -23 = 2. 20 + -43 = 3. -2 + 14 = 4. -80 + 100 = 5. -16 + -16 = What is one good thing that happened yesterday? Remember: What are Rational numbers? A number that can be written as a ratio or a fraction. -12/15 is a rational number Example of Adding Rational numbers: 1) -12/15 + ⅘ = Step 1: Rewrite the problem up and down -12 15 + 4 5 Step 2: Find a common denominator -12 15 X3 12 + 4 5 X 2 10 X 315 Step 3: Add the new fractions together -12 15 + 12 15 0 or 0 15 Step 1: Rewrite the problem up and down 6 7 + -1 14 Step 2: Find a common denominator 6 X 2 12 7 X 2 14 + -1 14 Step 3: Add the new fractions together 12 14 + -1 14 11 14 1) 8/9 + -4/5 = ½ 2) -6/7 + = 3) - 3/8 + 7/16 = 1) Joslyn made ⅔ chocolate cake and ⅓ strawberry cake. Derek ate ⅙ of the chocolate cake. How much chocolate cake is left if any? 2) Erik filled a bucket with 4/5 of a gallon of water. Later, he poured out 2/15 of a gallon of the water. How much water is left in the bucket? 3)While cooking a stew, Anne used 4/15 of a shaker of salt and 3/10 of a shaker of pepper. How much more salt did Anne Page 18 (team leaders come get copies for each of your team members) Before you sit down make sure you have all your supplies! Answer the following questions in your notebook 1. 8/11+ -1/22 = 2. 4/7 + -3/5 = 3. -2/9 + 5/18 = 4. -8/12 + 3/4 = 5. -1/2 + -1/2 = What is one good thing that happened yesterday? www.online-stopwatch.com/countdown-timer/