10. Is the sum of 9 and 0 larger than the sum of 8 and 2? 11. 14 and how many more are 49? 12. What is the answer to 79 minus 13? 13. Write 42, 2, 10, and 25 in a column and find the sum. 14. Take eight away from the sum of nine and eight. 15. If you spent cents one day and cents the next day, would you add or subtract to find out how much you spent on both days? 16. 7 cents=1 nickel and cents. 17. What number is missing below? 4 8 12 16 24 28 32 36 Copy Examples 18 to 26, putting the correct signs where the dotted lines are. 18. 9.66-21 21. 9.5=14 24. 20¢.9¢=29¢ 22. 10....1=9 25. 18 4=22 19. 6....6=0 20. 6....1=7 23. 18....99 26. 19.12=7 Two Important Things to Do: 1. Practice the 100 addition facts on pages 17 and 18 unless you can give every sum quickly and without a mistake. 2. If you do not know the 100 subtraction facts on pages 38 and 39, practice on them until you do. CHAPTER IV CARRYING IN ADDITION. DOLLARS AND CENTS NEW WORK READING AND WRITING NUMBERS 63. The Meaning of Numbers to 1000. (CLASS WORK.) Watch to see how large numbers are made from these ten figures: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. 2. How many tens in these numbers: 40, 70, 30, 80, 90, 60? 3. How many hundreds in 300, 500, 700, 800, 900? 4. Read the numbers in columns (A) to (F) on the next page. Read down the columns. READING AND WRITING NUMBERS This is the way to read numbers: 120 is read: "One hundred twenty." 442 is read: "Four hundred forty-two." 79 6. What does the 5 in 543 show? The 4? The 3? 64. Writing Numbers. (WRITTEN WORK.) Do you think that you can write numbers in figures when they are printed in words? Try it. Write the number that is: 1. 7 hundreds, 4 tens, and 6 ones. 2. 8 hundreds, 0 tens, and 3 ones. 3. 9 hundreds, 6 tens, and 4 ones. 4. 6 hundreds, 8 tens. 5. 5 hundreds, 0 tens, and 5 ones. 6. 3 hundreds, 5 tens, and 2 ones. 7. 1 hundred, 9 tens. Write in figures: 8. thirty-seven 9. eight hundred 10. forty-six 11. four hundred one 12. four hundred eleven 13. six hundred ten NEW WORK 14. nine hundred nine 65. How to Use This Book. (CLASS WORK.) This lesson will teach you some things about how to use your book. 1. Do you see a little picture on this page? (a) What does it tell you? (b) Why should you read very carefully each lesson that begins with this sign? HOW TO USE THIS BOOK 81 2. Find the very black number after the "NewWork" sign. It is called the "article" number. What is the number of the article you are now reading? 3. Read the words after the article number. Do they tell you what this article is about? 4. Find the words "Class Work." These words mean that this lesson is to be used as a reading lesson in class. How is Article 71 to be used? 5. Find the article which is numbered "42." (a) Does it have a "New-Work" sign? (b) What does Article 42 tell you about? 6. Find an article which does not have a "NewWork" sign. (a) What is its number? (b) What does it tell you about? 7. Look on page 83. What work begins there? 8. Find the last article in the book. (a) What is its page number? (b) What is its article number? 9. Find page 39. How will that page help you in your arithmetic work? 10. Find the table of "Contents" at the beginning of the book. How many chapters are in this book? ADDING LARGER NUMBERS 66. Getting Ready to Add Larger Numbers. (CLASS WORK.) Answer the questions below and on page 82 and tell what numbers belong on the blanks. 1. How many cents are there in a dime? 2. How many dimes are there in 20 cents? |