BIM Chapter 6 Review Answer Key

Big Ideas Mats 1. Write the percent as a decimal. 1 Correct answers: 1 2. Write the decimal as a percent. 1 Correct answers: 1 3. Write as a percent. 1 Correct answers: 1 4. What percent of 75 is 36? % of 75 is 36. 1 Correct answers: 1 5. What number is 86% of 50? 1 is 86% of 50. Correct answers: 1 6. 25% of what number is 39? 25% of 1 is 39. Correct answers: 1 7. Find the percent of increase from 58 pounds to 83 pounds. Round to the nearest tenth of a percent if necessary. percent of increase % 1 Correct answers: 1 8. Find the percent of decrease from 87 pounds to 16 pounds. Round to the nearest tenth of a percent if necessary. percent of decrease 1 % Correct answers: 1 9. You estimate that there are 75 marbles in a jar. The actual amount is 82 marbles. Find the percent error. Round to the nearest tenth of a percent if necessary. percent error 1 Correct answers: 1 % 10. Find the sale price of a $90 item after a 50% discount. The sale price is $ 1 . Correct answers: 1 11. Find the selling price of an $86 item after a 50% markup. The selling price is $ 1 Correct answers: 1 . 12. You deposit $600 in a savings account. The account earns 10% simple interest per year. a. What is the interest earned after 10 years? The interest earned is $ 1 after 10 years. b. What is the balance after 10 years? The balance is $ 2 after 10 years.  Correct answers: 1 13. 2 36.1 is what percent of 95? 36.1 is 1 % of 95. Correct answers: 1 14. Find the original price of a salt lamp that is $76 after a 20% discount. $ 1 Correct answers: 1 15. 44 is 55% of what number? 44 is 55% of 1 . Correct answers: 1 16. You deposit $400 in an account. The account earns $72 simple interest in 6 years. What is the annual interest rate? 1 % Correct answers: 1 17. How long does it take an account with a principal of $400 to earn $48 in interest at a simple annual interest rate of 2%? year(s) 1 Correct answers: 1 18. Order the numbersfrom least to greatest. 1 2 ,  22.5% , 3  0.21  Correct answers: 1 19. 2 0.21 3 22.5% Identify the percent of change from increase decrease Find the percent of change. 1 % Correct answers: 1 to as an increase or a decrease. 