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EXAMPLE 4 Multiplying Numbers in Scientific Notation
Find the product (4.5 103) (6.3 107).
(4.5 103) (6.3 107).
= 4.5 6.3 103 107
(4.5 6.3) (103 107)=
= 28.35 1010
= 2.835 101 1010
2.835 1011=
Product of powers property
Write 28.35 in scientific notation.
Product of powers property
Commutative property ofmultiplication
Associative property ofmultiplication
GUIDED PRACTICE for Example 4
Write the product in scientific notation
(1.25 106) (7.6 1012)17.
= 9.5 1018
GUIDED PRACTICE for Example 4
Write the product in scientific notation
4.52 1011=
18. (8 106) (5.65 104)