GRE Math : How to divide decimals

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Example Questions

Example Question #13 : Decimal Operations

Solve for :

0.22b = 1.32

Possible Answers:

b = 6

b = .4

b = 4

b = .6

b = 7

Correct answer:

b = 6

Explanation:

To solve, first divide both sides of the equation by 0.22 , leaving you with:

$b = \frac{1.32}{0.22}$

Then simply divide the decimals, which will yield your answer:

b = 6 .

If you have trouble dividing the decimals, you can multiply both of the numbers by one followed by a number of zeroes equal to the number of digits beyond the decimal point (one hundred, in this case), then divide, then divide your result by the same number (one hundred again).

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Example Question #15 : Decimals

Solve for (round to the nearest hundredth if necessary)

0.8c = 1.3

Possible Answers:

c = 2.625

c =0 .625

c = 1.63

c = 1.625

c = 1.6

Correct answer:

c = 1.625

Explanation:

To solve, first divide both sides of the equation by :

$\frac{.8c}{.8} = \frac{1.3}{.8}$

$c = \frac{1.3}{.8}$

To do this division, you can divide as normal, or if you are having trouble, you can multiply both numbers by 10 to eliminate the decimal:

$\frac{1.3}{.8} = \frac{13}{8}$

$c = \frac{13}{8}$

c = 1.625

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Example Question #16 : Decimals

Solve for :

0.22q = 22.22

Possible Answers:

q = 11

q = 111

q = 10

q = 100

q = 101

Correct answer:

q = 101

Explanation:

To solve, first divide both sides of the equation by so you isolate the variable:

0.22q/0.22 = 22.22/0.22

q = 22.22/0.22

Then, divide the decimal--if you have trouble doing so, remember that you can multiply both numbers by 100 to eliminate the decimal, and then divide as normal:

q = 2222/22

q = 101

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Example Question #14 : Decimal Operations

Solve for :

0.25x = 6.5

Possible Answers:

x = 26

x = 2.6

x = 62

x = .26

x = 260

Correct answer:

x = 26

Explanation:

To solve, first divide both sides of the equation by so you can isolate the variable:

0.25x/0.25 = 6.5/0.25

x = 6.5/0.25

Now divide. If you have trouble dividing decimals, you may multiply both dividend and divisor by 100 to eliminate the decimal and divide normally:

x=6.5/0.25 = 650/25

x = 26

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Example Question #15 : Decimal Operations

Solve for :

0.3y = 3.33

Possible Answers:

y = 111.11

y = 1.111

y = 11.1

y = .111

y = 111

Correct answer:

y = 11.1

Explanation:

To solve, first divide both sides of the equation by so you isolate your variable:

0.3y/0.3 = 3.33/0.3

y = 3.33/0.3

Then, divide the decimals. If you have trouble with this, you can multiply both numbers by 100 to eliminate the decimals and then divide normally:

y = 3.33/0.3 = 333/30

y = 11.1

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GRE Math : How to divide decimals

Study concepts, example questions & explanations for GRE Math

All GRE Math Resources

Example Questions

Example Question #13 : Decimal Operations

Example Question #15 : Decimals

Example Question #16 : Decimals

Example Question #14 : Decimal Operations

Example Question #15 : Decimal Operations

All GRE Math Resources

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