Encyclopedie des sciences mathematiques. III 4. Geometrie by Editor: Molk J.

By Editor: Molk J.

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515151 . . 1474747 . . Notice that only the digits under the vinculum are repeated. Every infinite repeating decimal can be expressed as a fraction. Example 19: Find the fraction represented by the repeating decimal . 30 CliffsNotes Algebra I Quick Review Example 20: Find the fraction represented by the repeating decimal . Example 21: Find the fraction represented by the repeating decimal Percent A fraction whose denominator is 100 is called apercent. The word percent means hundredths (per hundred).

45 × 48 = ______ (with exponents) 8. (3 2)3 = ______ (with exponents) 9. = 10. Approximate: (to the nearest tenth) 11. Simplify: 3[10(4 + 32)] 12. The number 6,321 is divisible by which numbers between 1 and 10? Answers: 1. 3, 4, 0, –1, 2 2. 2, 5, 7 3. 0 4. False 5. 1 6. 9. 4 10. 3 11. 1080 12. 3, 7 7. 413 8. 36 CHAPTER 2 SIGNED NUMBERS, FRACTIONS, AND PERCENTS Cha pt e r Che ck- I n ❑ Positive and negative numbers ❑ Fractions ❑ Decimals ❑ Repeating decimals ❑ Percent ❑ Scientific notation s you get closer to entering the world of algebra, you should have a solid background in working with signed numbers, fractions, and percents.

The numerator tells you how many of these equal parts are being considered. Thus, if the fraction is of a pie, the denominator 5 tells you that the pie has been divided into five equal parts, of which 3 (numerator) are in the fraction. ” In other words, also means 3 out of 5 equal parts from the whole pie. Negative fractions Fractions may be negative as well as positive. ) However, negative fractions are typically written as follows: Adding positive and negative fractions The rules for signed numbers apply to fractions as well.

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