4) Last year there were 43 science projects submitted by students at a science fair. This year there are 52 science projects. To the nearest tenth, what is the percent of change in the number of science projects submitted? 5) The table shows the prices of different sized jars of peanut butter. Which of the jars has the least unit price? 6) The table shows the heart rates of different animals. (a) What is the ratio of a cat’s mass to its heart rate? Express the ratio as a fraction in simplest form. (b) Order the animals from greatest mass to heart rate ratio, to least mass to heart rate ratio. (c) Which animal had the greatest ratio? Explain your reasoning. 7) Marcus drove 650 miles in 9.5 hours. What was his speed? (D=rt) Expressions and Equations (Non-Calculator Section) Name the property shown by each statement. Use the given word bank. Multiplicative Identity Associative Property of Addition Associative Property of Multiplication Commutative Property of Addition Commutative Property of Multiplication Distributive Property Additive Inverses Multiplicative Property of Zero Multiplicative Inverses Additive Identity (a) 42 + 36 = 36 + 42 ________________________________ (b) 16 + 0 = 16 ________________________________________ (c) (19 15) 2 = 19 (15 2) _____________________________ • • • •
4) Last year there were 43 science projects submitted by students at a science fair. This year there are 52 science projects. To the nearest tenth, what is the percent of change in the number of science projects submitted? 5) The table shows the prices of different sized jars of peanut butter. Which of the jars has the least unit price? 6) The table shows the heart rates of different animals. (a) What is the ratio of a cat’s mass to its heart rate? Express the ratio as a fraction in simplest form. (b) Order the animals from greatest mass to heart rate ratio, to least mass to heart rate ratio. (c) Which animal had the greatest ratio? Explain your reasoning. 7) Marcus drove 650 miles in 9.5 hours. What was his speed? (D=rt) Expressions and Equations (Non-Calculator Section) Name the property shown by each statement. Use the given word bank. Multiplicative Identity Associative Property of Addition Associative Property of Multiplication Commutative Property of Addition Commutative Property of Multiplication Distributive Property Additive Inverses Multiplicative Property of Zero Multiplicative Inverses Additive Identity (a) 42 + 36 = 36 + 42 ________________________________ (b) 16 + 0 = 16 ________________________________________ (c) (19 • 15) • 2 = 19 • (15 • 2) _____________________________
Incoming%20Grade%208%20Summer%20Packet%202015.docx