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Note Book Summary

(7.2)

Ratio:
A ratio is a comparison of two numbers. You generally separate the two numbers in the ratio with a colon (:). Suppose you want to write the ratio of 8 and 12. You can write this as 8:12 or as a fraction 8/12, and we say the ratio is eight to twelve.

Fraction:
There are different ways of writing a fraction. For example, two fifths of an object can be written as:
A common fraction
A decimal 0.4
A percentage 40%

Decimals:
A decimal is a proper fraction whose denominator is a power of 10. To convert a fraction into a decimal:
Divide the denominator (the bottom part) into the numerator (the top part):

? = 1 ÷ 4.00 = 0.25

Percents:
Percent is a ratio of a number to 100. A percent can be expressed using the percent symbol %.

10 percent or 10% are both the same, and stand for the ratio 10:100.

(7.3)

Percent of a Number:
To find the percent of a number write the percent as a decimal and then multiply by the......

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Approximate Word Count: 444
Approximate Pages: 2 (250 words per double-spaced page)

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