ADDING WITH ZERO IN TENS' COLUMN 107 83. A Game of Adding with Zero in Tens' Column. (SILENT READING.) See if you can find out by reading the directions just how to play this game. carefully. (a) Get paper and pencil ready for work. Read (b) Wait for the teacher to say "Go!" Then put the paper just under Example 1 below and add, writing your answer on the paper. (c) When you have finished Example 1, put up your hand and be quiet. (d) When all the pupils have finished Example 1, the teacher will tell you to put your hand down. (e) She will then ask the one who finished first to write his answer on the blackboard. (f) If the answer is not right, the teacher will say, "Erase it." If the answer is right, she will say, "Right." (g) If your answer is not correct, ask the pupil at the blackboard to tell how to work the example. (h) Get ready. Don't start until the teacher says, "Go!" (i) Play the game with the other examples below. (j) Ask questions now if you need to. 84. Practice in Adding Three-Figure Numbers. (ORAL AND WRITTEN WORK.) Look at the examples below and tell what to write and what to carry. You can do it without a pencil. Speak so that all the pupils can hear you. The first pupil should add the ones and the next pupil the tens. Don't go too fast. Raise your hand if you hear a mistake. This is the way to do it: Look at the first example while the teacher adds the ones' column. She will say, "11, 20. Write the 0; carry the 2." The teacher will then ask a pupil to go on with the adding. Remembering the 2 to carry, the pupil will say, "9, 11, 19. Write the 9 and carry the 1." Keep wide awake or you will miss something. After you have done the work aloud, add the examples. Check your work. 85. Problems about a Frog-Pond Game. (WRITTEN WORK.) Marjorie had a frog-pond game. Each frog was numbered. It was counted for the one who fished it out first. Marjorie and Roy played three games. 1. What was Marjorie's score the first game? 3. Who won the first game? 4. What was Marjorie's score the second game? 6. Who won the second game? 7. What was Marjorie's score the third game? 9. Who won the third game? 86. Extra Practice with Carrying. (WRITTEN WORK.) If you have been making mistakes in adding, practice on Examples 1 to 21 in this article. Take a row at a time, placing a paper under the examples so that you can write the sums on it. Perhaps you should take your book home and practice on these examples. If you are making many mistakes, you are not so good at arithmetic as you ought to be. Practice will help you. Work hard. NEW WORK you UNITED STATES MONEY UNITED STATES MONEY 87. Money. (CLASS WORK.) 111 (CLASS WORK.) Can you answer these questions about money? 1. How many cents are worth a nickel? 3. How many cents are worth two dimes? 4. How many cents are worth a quarter? SCOOTER $4.39 7. $ is called the dollar sign. Can you find it in the price of the scooter? Make it on the blackboard. 8. Do you see the dot between the 4 and the 39 in $4.39? This dot is used to separate the dollars from the cents. We call it the cents' point. pupil to write $4.39 on the blackboard. Choose a 9. What would it cost to buy the toy stove? 10. What is the price of the windmill? 11. Tell the price of the doll. Of the drum. |