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7.1B STUDENT ACTIVITY #1. (7.1) Number, operation, and quantitative reasoning. The student represents and uses rational numbers in a variety of equivalent forms. The student is expected to:

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## (7.1) Number, operation, and quantitative reasoning.

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**7.1B STUDENT ACTIVITY #1**(7.1) Number, operation, and quantitative reasoning. The student represents and uses rational numbers in a variety of equivalent forms. The student is expected to: (B) convert between fractions, decimals, whole numbers, and percents mentally, on paper, or with a calculator.**Part I: How do I convert ½ to a decimal?**numerator denominator 0.5 Divide the ___________ by the ___________ . The quotient is ___________ . Therefore, ___________ is the decimal equivalent to ½. 0.5 Write a decimal equivalent for the fraction in each box. = 0.___ = 0.___ = 0.___ = 0.___ = 0.___ 2 3 1 8 4 5 2 8 3 5 125 8 6 67 25 For each fraction converted to a decimal, divide the ___________ by the ___________ . The quotient is the ___________ ___________ of the fraction. numerator denominator decimal equivalent**Top In Bottom Out**2 0 6 6 3 3 .0 . 0 0 2 -18 2**Top In Bottom Out**1 0 1 2 5 8 8 . .0 0 0 0 0 1 -8 2 -16 4**Top In Bottom Out**4 0 8 5 5 .0 . 4 -40 0**Top In Bottom Out**2 0 2 5 8 8 .0 . 0 0 2 -16 4 -40**Top In Bottom Out**3 0 6 5 5 .0 . 3 -30 0**Part II: How do I convert 0.25 to a fraction?**place 100 value decimal 25 digits Use ________ as the denominator because it is the ________ ________ of the digit farthest to the right of the ________ point. Use ________ as the numerator because they are the ________ to the ________ of the ________ point. Therefore, ___________ is the fraction equivalent to 0.25. decimal right _25_ 100 Write a fraction equivalent for the decimal in each box. 0.4 = 0.625 = 0.375 = 0.5 = 0.75 = 5 10 4 10 625 1000 375 1000 75 100 For each decimal converted to a fraction, use the _________ _________ of the digit farthest to the right of the _________ _________ as the denominator. Then use the _________ to the right of the _________ _________ as the _________. place value point decimal digits decimal point numerator**.**ones tenths hundredths thousandths 75 100 0 . 7 5**.**ones tenths hundredths thousandths 5 10 0 . 5**.**ones tenths hundredths thousandths 4 10 0 . 4**.**ones tenths hundredths thousandths 625 1000 0 . 6 2 5**.**ones tenths hundredths thousandths 375 1000 0 . 3 7 5**Part III: How do I convert 0.75 to a percent?**decimal point right percent decimal Move the ________ ________ two places to the ________. Put a ________ sign after the number to replace the ________ point. Therefore, ________ is the percent equivalent to 0.75. 75% Write a percent equivalent for the decimal in each box. 0.6 = ___% 0.35 = ___% 0.25 = ___% 0.625 = ____% 0.80 = ___% 66 35 25 62.5 80 multiply For each decimal converted to a percent, ________ the decimal by ________. Place a ________ sign after the product. 100 percent**6**0 6 %**3**0 5 %**2**0 5 %**6**5 0 2 %**8**0 0 %**Part IV: How do I convert ¾ to a percent?**fraction decimal numerator denominator 0.75 0.75 Convert the ________ to a ________. Divide the ________ by the __________. The quotient is ______. Therefore, ________ is the decimal equivalent to ¾. Then, convert the ________ to a ________. Move the ________ ________ two places to the ________. Put a ________ sign after the number. The decimal point can be omitted if it is to the right of all the digits. Therefore, ________ is the percent equivalent to 0.75, and therefore is the percent equivalent to the fraction ________. decimal percent decimal point right percent 75% ¾ Write a percent equivalent for the fraction in each box. = ___% = ___% = ___% = ___% = ____% 1 3 3 4 2 5 4 8 7 8 75 40 87.5 33 50 divide For each fraction converted to a percent, ________ the ________ by the __________. Convert the ________ to a percent by multiplying by ________ and writing a ________ sign after the product. numerator denominator decimal 100 percent**Top In Bottom Out**1 3 3 3 0 3 . .0 0 0 1 0 3 3 % -9 1**Top In Bottom Out**3 4 7 5 0 4 . .0 0 0 3 0 7 5 % -28 2**Top In Bottom Out**2 5 4 0 5 .0 . 2 0 4 0 % -20 0**Top In Bottom Out**4 8 5 0 8 .0 . 4 0 5 0 % -40 0**Top In Bottom Out**7 8 8 7 5 0 8 .0 . 0 0 0 0 7 0 8 7 5 % -64 6 -56 4**Part V: How do I convert 6.75 to a percent?**decimal point right percent 675% Move the ________ ________ two places to the ________. Put a ________ sign after the number. Therefore, ________ is the percent equivalent to 6.75. Write a percent equivalent for the mixed decimal in each box. 3.35 = ___% 12.08 = ____% 1.20 = ___% 3.63 = ____% 9.091 = _____% 335 1208 120 363 909.1 For each decimal I converted to a percent, I move the ________ ________ two places to the ________. Then I put a ________ sign after the number. If the decimal point is to the ________ of the digits, I do not have to write it in the percent number. ________ is the only one of these percents above that I must write the decimal point. right decimal point percent right 909.1**3**3 5 %**0**1 2 8 %**2**1 0 %**6**3 3 %**0**9 9 % 1

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