Basic College Mathematics: A Real-World Approach by Ignacio Bello

By Ignacio Bello

Uncomplicated collage arithmetic should be a assessment of basic math suggestions for a few scholars and will holiday new floor for others. however, scholars of all backgrounds should be extremely joyful to discover a fresh publication that appeals to all studying types and reaches out to various demographics. via down-to-earth motives, sufferer skill-building, and highly attention-grabbing and reasonable functions, this worktext will empower scholars to profit and grasp arithmetic within the genuine international.

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Step 1. 405,648 Underline the 5 (the thousands place). Step 2. 406,648 Six is more than 5 (add 1 to the 5). 5ϩ1ϭ6 Step 3. 406, 000 ︸ Change to zeros. Thus, 405,648 rounded to the nearest thousand is 406,000. c. Step 1. 405,648 Underline the zero (the ten thousands place). Step 2. 415,648 Five is equal to 5 (add 1 to the 0). 0ϩ1ϭ1 Step 3. 410,000 ︸ Change to zeros Thus, 405,648 rounded to the nearest ten thousand is 410,000. Rounding whole numbers This year, the best-selling car in America is the Toyota Camry.

SOLUTION Write three hundred ten million, six hundred ninety-two thousand, seven hundred twelve in standard form. The standard form is 103,847,611. EXAMPLE 11 Writing numbers in standard form Write four billion in standard form. Gobbling popcorn Americans eat about 4 billion gallons of popped popcorn each year, with the average person munching about 15 gallons annually. That’s enough popped corn to fill 70 four-cup-size popcorn boxes. SOLUTION PROBLEM 10 PROBLEM 11 Americans eat one billion, one hundred twenty-five million pounds of popcorn each year.

SOLUTION 41,205 ϭ 40,000 ϩ 1000 ϩ 200 ϩ 0 ϩ 5 or ϭ 40,000 ϩ 1000 ϩ 200 ϩ 5 Note that when zeros occur in the given numeral, the expanded form is shorter. S. public road miles is 89,789. Write 89,789 in expanded form. S. public road miles is 598,421. Write 598,421 in expanded form. 598,641 ϭ 500,000 ϩ 90,000 ϩ 8000 ϩ 400 ϩ 20 ϩ 1 C V Standard Form of a Numeral We can also do the reverse process, that is, we can write the standard form for 3000 ϩ 200 ϩ 80 ϩ 9 3 EXAMPLE 6 Writing numbers in standard form Write 7000 ϩ 800 ϩ 90 ϩ 2 in standard form.

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