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Transcript
(G8)Homework Packet #11 Use the order of operations to evaluate the expression. ____ ____ 1. 15 + 9/3 - 2 1) 2) 6 24 2. 60% as a decimal 1) 0.4 2) 3) 4) 0.06 3) 16 4 0.65 4) 0.6 Find each number. Round to the nearest tenth if necessary. ____ 3. Find 25% of $460. 1) 2) $230 $135 3) 4) $115 $1840 ____ 4. What is the value of the product ? (Use mental math) [Move the decimal] 1) 11,814,000 3) 118,140 2) 0.011814 4) 1,181,400 ____ 5. Which of the following numbers is a prime number? 10, 20, 35, 47, 66, 81 1) 20 3) 2) 66 4) 47 10 6. Which of the following numbers is a composite number? 5, 23, 47, 73, 77, 79 1) 77 3) 2) 23 4) 79 5 ____ Find the product. Simplify. ____ 7. 4/5 of 40 1) 32 2) 3) 12 4) ____ 8. Suppose you have 15 muffins. How many muffins are left after you give a friend of them? 1) 12 muf2) 10 muf3) 45 muf4) 5 muffins fins fins fins ____ 9. Find the reciprocal of 1) 9 2) 11 3) 0.04 3) 4) Write the percent as a decimal. ____ 10. 4% 1) 0.004 2) 0.4 ____ 11. A letter or other symbol that represents an unknown quantity is called a 1) vertex 3) 2) integer 4) 4) operation variable 4 ____ 12. The numerical factor of a term that contains a variable is called a 1) coefficient 3) 2) property 4) multiple constant ____ 13. When simplifying an expression, you ____ perform operations inside grouping symbols first. 1) always 2) sometimes 3) never ____ 14. Evaluate the expression for a = 4 and b = 3. 1) 36 2) 24 3) 81 4) 144 3) 128 4) 92 Simplify the expression. ____ 15. 4(20 + 12) / (4 - 3) 1) 29 2) 80 ____ 16. Name the set(s) of numbers to which 1.68 belongs. 1) rational numbers 2) natural numbers, whole numbers, integers, rational numbers 3) rational numbers, irrational numbers 4) none of the above ____ 17. Name the set(s) of numbers to which –5 belongs. 1) 2) 3) 4) whole numbers, natural numbers, integers rational numbers whole numbers, integers, rational numbers integers, rational numbers ____ 18. The opposite of a negative number is ____ negative. 1) always 2) sometimes 3) never Solve the equation. Then check your solution. ____ 19. -19z - 18 = -16z + 3 1) 2) –7 7 3) 4) ____20. List the whole numbers that satisfy the inequality n/3 is less than or equal to 2. 1) {0, 1, 2, 3, 4, 5} 3) {0, 1, 2, 3, 4, 5, 6} 2) {1, 2, 3, 4, 5} 4) {1, 2, 3, 4, 5, 6} Short Answer Solve the equation. 21. 5p/7 - 18 = -43 22. 5x – 5 = 3x – 9 Simplify the expression. 23. 3[(15 - 3)^2 / 4] 24. Find the perimeter of the following figure. All sides are equal. [5 in.] 25. Order these numbers from least to greatest. 3 3/7, , 3.571, 3.34, 3 3/4 , 3.9