Math Group
Question:
1) 3 5/7 divided by 7/8
2)12 5/6 + 8 9/16
3)6(-3) (-3 is an exponent)
4)14569000
There are 4 questions.
number 1 and 2, is solving fractions.(division and addition)
number 3 is writing it into standard form
number 4 is expressing the number into scientific notation.
please help me thank you
Answers:
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ladyvols1 Teacher
High School - 9th GradeeNotes Editor
Posted by ladyvols1 on Friday October 17, 2008 at 8:58 AMIn dividing fractions you first have to make all numbers improper by multiplying the denominator by the whole number and add it to the numerator. You invert the second fraction and multiply then reduce. The answer to 1 is 4 and 12/49
In adding fractions you must find the common denominator then add the numerators, place that over the denominator and reduce. The answer to # 2 ) is 21 and 19/48
In three you must multiply 1/6 by 1/6 by 1/6 and the answer is 1/216. When you have a negative exponent you must use the reciprocal of 6 which is 1/6.
Last 1.4569 X 10 (7) with 7 being exponent. You move the decimal all the way over to the first number and then count you place values to find the exponent.
Sources:
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vitullokj Teacher
Middle SchoolPosted by vitullokj on Monday October 20, 2008 at 11:55 AM1. 3 5/7 divided by 7/8...
Change 3 5/7 to an improper fraction... 26/7 then multiply it by the recripical of 7/8 which is 8/7. Now we have 26/7 x 8/7 = 208/49 = 4 12/49
2. 12 5/6 + 8 9/16
Find a common denominator... 48 Find the equivalent fractions 12 5/6 = 12 40/48 8 9/16 = 8 27/48 Add them
20 67/48 = 21 19/48
3. 6(-3) = -18 () is the same as multiplying. A positive times a negative is a negative.
4. 14569000 = 1.4569 X 10 to the 7th power.
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