PART I INTRODUCTION REVIEW AND PREPARATION NOTATION AND NUMERATION EXERCISES 1. Write in figures and also in Roman characters: All the numbers from 1 to 20. All the tens from 20 to 100. All the hundreds from 100 to 1000. 2. How many different figures did you use in writing? 3. How many different Roman letters did you use? 4. Read 165,276. 5. Name each figure from its position. 6. Into what does the comma divide the number? 7. Write, divide into periods, and read the following: 1. Write a problem, using the signs +, -, =. 2. Add: 267 376 Tell how you find each figure of the result. 3. Subtract rapidly : ORAL EXERCISES 1 from: 2, 3, 4, 5, 6, 7, 8, 9. 2 from 3, 4, 5, 6, 7, 8, 9. 3 from 4, 5, 6, 7, 8, 9. 4 from: 5, 6, 7, 8, 9. 5 from 6, 7, 8, 9. 6 from: 7, 8, 9. 7 from 8, 9. 8 from: 9. |