Review For Test #2 PEMDAS Prime Factoring Ratios/Rates Input/Output Tables Rounding 10 10 10 10 10 20 20 20 20 20 30 30 30 30 30 40 40 40 40 40 50 50 50 50 50 Question 1 - 10 What do the letters PEMDAS stand for? Answer 1 – 10 Parentheses Exponents Multiply/Divide Add/Subtract Question 1 - 20 Solve the following PEMDAS problem. 6 x (6 - 3) + 5 Answer 1 – 20 23 Question 1 - 30 Solve the following PEMDAS problem 7 + 8 ÷4 +3-2 Answer 1 – 30 10 Question 1 - 40 Solve the following PEMDAS Problem. 25 ÷ 5 x 2 + 1 Answer 1 – 40 11 Question 1 - 50 Solve the following PEMDAS problem. 9 X 5 – 4 + 3 x 4 = Answer 1 – 50 53 Question 2 - 10 Write the following using exponents. 2x2x2x3x3x5x5x7 Answer 2 – 10 2³ x 3² x 5² x 7 Question 2 - 20 List all the factors for the number 24. Answer 2 – 20 1, 2, 3,4, 6, 8,12, 24 Question 2 - 30 What is the prime factorization of 18? Answer 2 – 30 2x3x3 or 2 x 3² Question 2 - 40 What number is represented by the prime factorization 5 x 2³ ? Answer 2 – 40 40 Question 2 - 50 What number is represented by the prime factorization 7 x 3² ? Answer 2 – 50 63 Question 3 - 10 There are 24 boxes and 12 lids. What is the ratio of lids to boxes? Answer 3 – 10 12 : 24 12 to 24 12 / 24 Question 3 - 20 There are 36 math books and 18 reading books. What is the ratio of the total number of books to the number of math books? Answer 3 – 20 54 : 36 54 to 36 54 / 36 Question 3 - 30 Out of 22 paper clips, there are 15 that are blue. What is the ratio of paper clips that are not blue to the number of paper clips that are blue. Answer 3 – 30 7 to 15 7 : 15 7 / 15 Question 3 - 40 Kate runs 10 miles in 5 days. At this rate, how many miles does she run in 1 day? Answer 3 – 40 2 Question 3 - 50 If Frank pays $36 for 4 pairs of shorts. How much is Frank paying for 1 pair of shorts? Answer 3 – 50 $9.00 Question 4 - 10 Finish the following Input / Output Table. What is the rule? Input Rule Output 6 2 9 3 15 5 Answer 4 – 10 ÷ 3 Question 4 - 20 Find the value of the missing output. Input Rule Output 2 ? 14 4 ? 28 8 ? Answer 4 – 20 56 Question 4 - 30 Given the following information, what would be the correct equation generated from the table? Time (Hours - H) Work Completed (W) 2 12 3 18 H ? a. H + 5 b. H x 6 c. H - 10 Answer 4 – 30 B. H x 6 Question 4 - 40 The side lengths and perimeters of some regular polygons are shown below. Side Lengths (s) Perimeter (Units) 3 9 4 12 5 15 s ? Which expression can be used to find the perimeter of a similar polygon with side length s? a. S + 2 b. s³ c. 3s Answer 4 – 40 3s Question 4 - 50 If R = 8 and T = 3, what is the answer to this equation? 2R + T = ? Answer 4 – 50 19 Question 5 - 10 Round 765 to the hundreds place. Answer 5 – 10 800 Question 5 - 20 Round 36,780 to the thousands place. Answer 5 – 20 37,000 Question 5 - 30 Rich spend $45.67 on three CDs and $19.95 on a video game. How much did he spend? Round this amount to the nearest dollar. Answer 5 – 30 $66.00 Question 5 - 40 Sam bought 36 bedding plants to put in his mother’s flowerbed and 15 shrubs. Approximately how many bedding plants did he buy? Answer 5 – 40 40 Question 5 - 50 If there are 52 windows on the east and the west side of the Alico building and 50 windows on the north and south side of the Alico building, about how many total windows are there in the building? Answer 5 – 50 200