PARTS OF NATURAL NUMBERS PROBLEMS To see the answer, pass your mouse over the colored area. 11. a) Which numbers are the first five multiples of 6? 6, 12, 18, 24, 30. 11. b) 6 is which part of each one of those (except 6)? 6 is half of 12. 6 is the third part of 18. 6 is the fourth part of 24. 6 is the fifth part of 30. 12. Complete the following with the word 12. a) A larger number is a multiple of a smaller number. 12. b) A smaller number is a part of a larger number. 12. c) "3 is the fifth part of 15" means, 15 is the fifth multiple of 3. 12.
d) Since 12 is the third multiple of 4, we say that 4 is the third 12.
e) 40 is eight 12. f) Every number is a certain part of each of its multiples. 12.
g) A number is divisible by 9, is the same as saying that the number 12.
h) Each divisor of a number (except the number itself) is a certain 13. Spell the ordinal name of each of the following:
14. a) Which numbers are the divisors of 6? 1, 2, 3, 6. 14. b) Each divisor (except 6) is which part of 6? 1 is the sixth part of 6. 2 is the third part of 6. 3 is half of 6. 15. a) Find all the divisors of 18 in pairs. 1 and 18 2 and 9 3 and 6 15. b) Each divisor (except 18) is which part of 18? 1 is the eighteenth part of 18. 2 and 9
2 is the 3 and 6
3 is the 16. a) Find all the divisors of 24 in pairs. 1 and 24 2 and 12 3 and 8 4 and 6 15. b) Each divisor (except 24) is which part of 24? 1 is the twenty-fourth part of 24. 2 and 12 2 is the 3 and 8 3 is the 4 and 6 4 is the 17. Write the first five numbers that have 17. a) a third part. 3, 6, 9, 12, 15. 17. b) a fourth part. 4, 8, 12, 16, 20. 17. c) a fifth part. 5, 10, 15, 20, 25. 18. 1 is a part of every natural number (except itself). Which part is it of 2 Half. 3 Third. 4 Fourth. 10 Tenth. 79 Seventy-ninth. 1000 Thousandth. 19. How much is each of the following?
10. Complete the following. 6 is the third part of 18. 6 is the fourth part of 24. 6 is half of 12. 10 is the fifth part of 50. 10 is the eighth part of 80. 3 is the seventh part of 21. 1 is the fourth part of 4. 1 is the sixth part of 6. 8 is the ninth part of 72. 11. a) 7 is which part of 21? The third. 11. b) 6 is which part of 24? The fourth. 11. c) 9 is which part of 45? The fifth. 11. d) 8 is which part of 72? The ninth. 11. e) 1 is which part of 12? The twelfth. 11. f) 1 is which part of 100? The hundredth. 11. g) 10 is which part of 100? The tenth. 12. Same digits; powers of 10. 12. a) $45 is which part of $450? The tenth. 12.
b) $4 12
c) $ 13. The parts of 100%. Which part of 100% is 50%? Half. 25%? A fourth, or a quarter. 20%? A fifth. 10%? A tenth. 5%? A twentieth. 1%? A hundredth. 14. 14. Compare the following. 14 a) 6 is half of 12. 6 is 50% of 12. 14. b) 9 is a fourth of 36. 9 is 25% of 36. 14. c) 7 is a fifth of 35. 7 is 20% of 35. 14. d) 6 is a tenth of 60. 6 is 10% of 60. 14. e) $3.45 is a hundredth of $345. $3.45 is 1% of $345. 15. Into which parts could you divide 16 people?
Halves, fourths, eighths, and sixteenths. Continue on to the next section. or Return to the previous section. Please make a donation to keep TheMathPage online. Copyright © 2012 Lawrence Spector Questions or comments? E-mail: themathpage@nyc.rr.com |