NOTE. - Also read the above as dollars, cents, and mills. * The following exercises should be read aloud by the pupils at recitation. The class should be still further practised, if necessary, by reading similar exercises from the blackboard, until they can read quickly and accurately. The teacher should then, with the books closed, dictate the same exercises for the class to copy. When they have finished, let them exchange slates, and let the teacher read the lesson from the book, requiring each pupil to note his neighbor's errors by drawing a line under the numbers incorrectly written. Can a composite num- REVIEW.-What is the difference between a composite and a prime number? (70, 71.) Can a prime number have a factor or divisor? ber have a factor or divisor? (72.) Give an example. greatest common divisor? (74.) 9. Add, 3 ten-thousandths, 41 ten-thousandths, 321 ten-thousandths, 6002 ten-thousandths, 10. Add, 5 and 3 tenths, 5 and 3 ten-thousandths, 6 and 3 thousandths, 600 and 3 thousandths, 6 and 33 hundredths. 11. Add, 4 and 46 hundred-thousandths, 2 and 11 hundred-thousandths, 59 hundred-thousandths, 70 hundred-thousandths. NOTE. 12. Add, 27 and 3 tenths, 27 and 3 hundredths, 27 and 3 ten-thousandths, 27 and 3 hundred-thousandths. 13. Add, 1 and 37 hundredths, 5 and 27 hundred-thousandths, 1 and 11 thousandths, 1 and 11 ten-thousandths, 3 and 5 tenths. 14. Add, 6 and 3 tenths, 11 and 47 hundredths, 5 hundred-thousandths, 500 thousandths, The teacher should dictate examples similar to the above, until the pupils are ready and accurate in notation. 106. SUBTRACTION OF DECIMALS. From 97 hundredths take 37 thousandths. ANALYSIS AND RULE. The same as in simple numbers. PROCESS. .97 .037 .933 15. From 63 and 4 hundredths take 4 and 3 tenths. 16. From 25 take 5 and 3 hundredths. 17. From 547 ten-thousandths take 447 hundred-thou sandths. 18. From 495 thousandths take 459 millionths. 19. From 1 take 4701 millionths. 20. Take 5 and 3 thousandths from 25. 21. Take 33 thousandths from 33 hundredths. 22. Take 3 thousandths from 3000. 23. Take 101 millionths from 101000000. 24. Take 79 ten-thousandths from 79000. MISCELLANEOUS WRITTEN EXAMPLES. 25. What is the difference between 59 and .59? Between 3.7 and .37? Between 37 and .037? 26. John is 28.4 years old; Edward is 30.94 years old: what is the sum of their ages? What is the difference of their ages? 27. A man received $37.43 for corn, and $274.07 for wheat: how much did he receive for both? How much more did he receive for the wheat than for the corn? 28. From a cask containing 32.5 gallons of wine, 20.47 gallons were drawn: how much remained? How many gallons would three such casks hold? 29. Two men build 118 rods of stone fence; one built 63.50 rods: how much did the other build? much more did one build than the other? How 30. Two men earned $195.73; one earned $86.80; how much did the other earn? How much more did one earn than the other? 25 31. What is the sum of, 100, 180, 18%, and 180? 37 100, 32. 2.4+100+180 +120-1803 = how many? 33. 5 46 100+3= 18 + 4 + 0 - %+3= how many? 34. 4.1++102% +180 + 150 = how many? 1000 35. 5.02180-10 + 100 1000 = how many? 36. 6.3++ 5.4-1000 + 10 1000+10= how many? == REVIEW. How can a composite number be resolved into prime factors? (73.) What is meant by a common multiple? (75.) What by a least common multiple? (76.) What is the use of cancellation? (77.) Upon what principle does it depend? (78.) Give an illustration. Give an illustration of what is meant by a fraction. (79.) Define a fraction. (79.) What does the denominator of a fraction show? (80.) The numerator of a fraction? (81.) What is a proper fraction? (82.) An improper fraction? (83.) A mixed number? (84.) Give the principles. (85.) How are frac tions written? |