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By P. M. Cohn

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Sample text

Determine the place value of each 3 in the number 303. Millions Period 4, 0 5 8, 6 1 One s Concept Connections 4 Figure 1-1 The digit 5 in the number 4,058,614 represents 5 ten-thousands because it is in the ten-thousands place. The digit 4 on the left represents 4 millions, whereas the digit 4 on the right represents 4 ones. Skill Practice Determine the place value of the digit 4 in each number. 2. 547,098,632 3. 1,659,984,036 4. 6420 Skill Practice 5. Alaska is the largest state geographically.

What is the greatest two-digit number? 88. What is the greatest three-digit number? 89. What is the greatest whole number? 90. What is the least whole number? 91. How many zeros are there in the number ten million? 92. How many zeros are there in the number one hundred billion? 93. What is the greatest three-digit number that can be formed from the digits 6, 9, and 4? Use each digit only once. 94. What is the greatest three-digit number that can be formed from the digits 0, 4, and 8? Use each digit only once.

The key (or on some calculators, the key or key) tells the calculator to complete the calculation. Notice that commas used in large numbers are not entered into the calculator. Expression Keystrokes 92,406 ϩ 83,168 92406 Result 175574 83168 Your calculator may use the key or key. To subtract numbers on a calculator, use the subtraction key, . Do not confuse the subtraction key with the key. The will be presented later to enter negative numbers. Expression Keystrokes 345,899 Ϫ 43,018 345899 Result 43018 302881 Calculator Exercises For Exercises 117–122, perform the indicated operation by using a calculator.

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