PARTS OF NATURAL NUMBERS 2 PROBLEMS To see the answer, pass your mouse over the colored area. 11. A mixed number of times. If tomatoes costs $.60 a pound, and 12. How much is 2. a) Two and a half times 40? 100 2. b) One and a half times 12? 18 2. c) One and a quarter times 20? 25 2. d) Two and a quarter times 8? 18 2. e) Three and a half times 10? 35 2. f) Five and a third times 6? 32 2. g) One and a quarter times 100? 125 2. h) One and three quarters times 100? 175 13. Numbers that end in 0's. How much is
14. How much is
15. Finding a part by decomposing. Complete the following. 5. a) Half of 46 = Half of + Half of = 5. b) Half of 58 = Half of 50 + Half of 8 = 25 + 4 = 29 5. c) Half of 112 = Half of 100 + Half of 12 = 50 + 6 = 56 5. d) A third of 72 = A third of 60 + A third of 12 = 24 5. e) A third of 690 = A third of 600 + A third of 90 = 230 5. f) An eighth of fifth of $42.40 = An eighth of $40 + 5. f) An eighth of fifth of $42.40 = An eighth of $2.40 = $5.30 16. Can you calculate a third of each one mentally? How much is two 6. a) 42 42 = 30 + 12. One third = 10 + 4 = 14. Two thirds = 28. 6. b) 195 195 = 180 + 15. One third = 60 + 5 = 65. Two thirds = 130. 6. c) 234 78; 156 d) $22.50 $7.50; $15.00 6. e) $14.40 $4.80; 9.60 f) $31.20 $10.40; $20.80 17. Calculate mentally by decomposing.
18. Write a tenth of each of the following. Write a hundredth.
19. Calculator problems 19. a) Two thirds of 82,317 = 54,878 19. b) Three fourths of $318.56 = $238.92 19. c) Four fifths of $893.50 = $714.80 19. d) Five eighths of $5,045.33 = $3,153.33 10. a) How many ounces are there in half a pound? 10. b) How many ounces are in a quarter of a pound? 4 10. c) How many in three quarters of a pound? 12 10. d) How many ounces are in an eighth of a pound? 2 10. e) How many in seven eighths of a pound? 14 11. a) How many ounces are there in a quarter of a cup? 11. a) (1 cup = 8 ounces) 2 ounces 11. b) How many ounces are in three quarters of a cup? 6
12. a) How many centimeters (cm) are there in a tenth of a meter? 12. a) (1 m = 100 cm) 10 12. b) How many centimeters are in a quarter of a meter? 25 12. c) How many centimeters are in a fifth of a meter? 20 12. d) How many in three fifths of a meter? 60 13. How many feet are there in three quarters of a mile? 13. (1 mile = 5,280 feet) 3,960 14 How many yards are there in nine tenths of a mile? 14. (1 mile = 1,760 yards) 1,584 15. Percent 15.
a) What number is a third of 100?
15. d) How much is a third of $21? $7
16. Calculator problem. Round off to two decimal places. 16. a) A sixth of the class got A. What percent got A? 100 ÷ 616.67% 16. b) A seventh of the class got B. What percent got B? 14.29% 16. c) Three eighths of the class got C. What percent got C? 37.5% Continue on to the next section. or Return to the previous section. Please make a donation to keep TheMathPage online. Copyright © 2001-2007 Lawrence Spector Questions or comments? E-mail: themathpage@nyc.rr.com |