a. If a decimal is to be divided by a multiple of ten (10, 100, 1000, and so forth),

move the decimal point as many places to the left as there are zeroes in the divisor.

b. For example: When dividing 0.2 by 100, move the decimal point one place to

the left for each of the zeros in the divisor (the number you are dividing into the other

number). There are two zeros, therefore, we move the decimal two places to the left.

Examples:

5 l0

1.8 10

(1)

=

0.5

(4)

= 0.18

5 100 =

1.8 100 = 0.018

(2)

0.05

(5)

5 1000 =

1.8 1000 = 0.0018

(3)

0.005

(6)

c.

Work the following problems:

6.2 100

12.324 100

(1)

=______

(6)

=______

20 10

65 1000

(2)

=______

(7)

=______

4.3 1000

0.025 10

(3)

=______

(8)

=______

0.08

1.34 1000

(4)

100

=______

(9)

=______

0.7

65.0 100

(5)

10

=______

(10)

=______

Answers: (1) 0.062

(4) 0.0008 (7) 0.065

(10) 0.65

(2) 2

(5) 0.07

(8) 0.0025

(3) 0.0043

(6) 0.12324 (9) 0.00134

d.

Example problems.

(1)

If a pharmacy specialist is to make 1000 capsules of a drug with each

capsule containing 0.005 grams of the drug, how many grams of the drug would he

use?

Answer: __________grams

MD0802

1-18

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