I. ORAL AND WRITTEN WORK

For convenience in reading, the periods are sometimes separated by commas.

Point off and read the following:

Every period, except the highest or left-hand period must contain three figures.

Express by figures:

1. Forty-five thousand three hundred twenty-nine. 2. Six hundred eighteen thousand seven hundred forty-three.

3. Three hundred seventy-six thousand.

4. Eight hundred forty thousand nine hundred six. 5. Nine hundred sixty-two thousand fifty. 6. One million thirty-seven thousand thirty-seven. 7. Three hundred sixty-three million four hundred thousand seven hundred nine.

8. Twenty-six billion twenty-six million seventy

WRITTEN WORK

1. Find the sum of seven hundred thirty-six thousand four hundred twenty-three, nine hundred three thousand five hundred six, one hundred thousand seventy, sixty thousand eighty.

2. Add two million seven thousand thirty-five, fourteen million three hundred thousand two hundred thirty-seven, four hundred thousand thirty-eight.

3. Add forty thousand four hundred five, three hundred thousand two hundred twenty-four, sixtynine thousand sixty-nine, five hundred thirty thousand five hundred thirty.

4. Subtract three hundred fifty-four thousand three hundred forty-three from seven hundred thousand seven hundred.

5. From one million one hundred thousand four hundred sixty-five take nine hundred twenty-three thousand seventy-nine.

6. From two billion sixty million one thousand one take seventy-nine million seventy-nine thousand seventy-nine.

7. Find the sum of three hundred ninety-six thousand three hundred eighty-seven and one million one hundred thirty-two thousand five hundred fifty

1. Find the sum of three hundred twenty-one thousand six hundred thirty-four dollars twenty-eight cents, eighty-nine thousand three hundred dollars twenty-seven cents, nineteen thousand three hundred forty-two dollars seventy-five cents.

2. From 2 billion 777 million 336 thousand 173 dollars and 37 cents, take 1 billion 205 million 301 thousand 392 dollars and 89 cents.

3. Add $3764.43,

ORAL WORK

Where more than three figures are employed to express numbers they are divided into groups called Periods. The first group of three figures, counting from the right, constitutes the units' period; the second group of three figures constitutes the thousands' period; the third group the millions' period; the fourth group the billions' period; the fifth group the trillions' period. The names of a few periods above trillions are: quadrillions, quintillions, sextillions, septillions, and octillions.

Read the following

numbers:

763, 684, 367, 487, 324 749, 608, 437, 306, 420

9, 300, 706, 370, 706 29, 000, 700, 007 163, 005, 308, 726 189, 726, 472, 396, 504

206, 410, 000, 320, 496

700, 300, 010, 604, 729

7, 300, 400, 002

760, 380, 000, 960

UNITS

I. ORAL AND WRITTEN WORK

For convenience in reading, the periods are sometimes separated by commas.

Point off and read the following:

Every period, except the highest or left-hand period must contain three figures.

Express by figures:

1. Forty-five thousand three hundred twenty-nine. 2. Six hundred eighteen thousand seven hundred forty-three.

3. Three hundred seventy-six thousand.

4. Eight hundred forty thousand nine hundred six. 5. Nine hundred sixty-two thousand fifty. 6. One million thirty-seven thousand thirty-seven. 7. Three hundred sixty-three million four hundred thousand seven hundred nine.

8. Twenty-six billion twenty-six million seventy