8 Chapter 1 Whole Numbers Writing a Number in Words 0 1 2 3 4 5 6 7 8 9 10 11 12 Example 5 The whole numbers begin at 0 and are ordered from left to right by increasing value. A number is graphed on a number line by placing a dot at the correspond- Answers ing point. For any two numbers graphed on a number line, the number to the 10. One billion, four hundred fifty million, three hundred twenty-seven thousand, two hundred fourteen 11. 14,609 5 5 5 5 5 5 We have seen several examples of writing a number in standard form, in expanded form, and in words. Standard form is the most concise representation. Also note that when we write a four-digit number in standard form, the comma is often omitted. For example, 4,389 is often written as 4389. 4. The Number Line and Order Whole numbers can be visualized as equally spaced points on a line called a number line (Figure 1-2). Figure 1-2 Write 621,417,325 in words. Solution: 621,417,325 six hundred twenty-one million, four hundred seventeen thousand, three hundred twenty-five Notice from Example 5 that when naming numbers, the name of the ones period is not attached to the last group of digits. Also note that for whole numbers, the word and should not appear in word names. For example, 405 should be written as four hundred five. Writing a Number in Standard Form Write the number in standard form. Six million, forty-six thousand, nine hundred three Solution: six million nine hundred three 6,046,903 forty-six thousand Example 6 Skill Practice 10. Write 1,450,327,214 in words. Skill Practice 11. Write the number in standard form: fourteen thousand, six hundred nine.
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