Section 1.3 Subtraction of Whole Numbers 31 For Exercises 91–94, use the information from the bar graph. (See Example 8.) 91. What is the difference in the number of marriages between year 3 and year 4? 92. Find the decrease in the number of marriages in the United States between year 4 and year 5. 93. What is the difference in the number of marriages between the year having the greatest and the year having the least? 94. Between which two consecutive years did the greatest increase in the number of marriages occur? What is the increase? Calculator Connections Topic: Subtracting Whole Numbers To subtract numbers on a calculator, use the subtraction key . Do not confuse the subtraction key with the key. The is presented later to enter negative numbers. Expression Keystrokes Result 345899 43018 302881 345,899 43,018 Calculator Exercises For Exercises 95–97, subtract by using a calculator. 95. 96. 97. 82,025,160 79,118,705 953,400,415 56,341,902 4,905,620 458,318 For Exercises 98–101, refer to the table showing the land area for five states. 98. Find the difference in land area between Colorado and Wisconsin. 99. Find the difference in land area between Tennessee and West Virginia. 100. Find the difference in land area between the state with the greatest land area and the state with the least land area. State Land Area (mi2) Rhode Island 1,045 Tennessee 41,217 West Virginia 24,078 Wisconsin 54,310 Colorado 103,718 101. How much more land area does Wisconsin have than Tennessee? Number of Marriages in the United States for Selected Years Number of Marriages (thousands) 2500 2254 2245 2279 2249 2160 2205 2000 1500 1000 500 0 1 2 3 4 5 Year 6 Source: National Center for Health Statistics Figure for Exercises 91–94
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