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NO. 23

4.44 X 103

Solution:

4.44 is between 1 and 10; the decimal

4,444

4.44 X 10

point moved 3 places LEFT; the

3

exponent is a +3.

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NO. 24

Study the following problem on SCIENTIFIC NOTATION, rounded off to 3 significant digits.

665,878 = ___________

Solution:

6.65878 is a number between 1 and 10. Since the decimal

point moved 5 places LEFT, the exponent of the power of 10

is a POSITIVE 5. 6.65878 is now 6.66 rounded off to 3

significant digits.

Thus:

665,878 = 6.65878 X 105 = 6.66 X 105

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NO. 25

Convert this number to SCIENTIFIC NOTATION, rounded off to 3 significant digits.

.00008887 = ______________