Example 1 Writing a Number in Scientific Notation

Joseph King used 110,000 toothpicks to make his Eiffel Tower model. To write 110,000 in scientific notation, use powers of 10.

ART

Product form

5 zeros

100,0001.1

Scientific notation

Exponent is 5.

10 51.1

Standard form

Move decimal point5 places to the left.

110,000

ANSWER

Joseph King used toothpicks to make his model.

10 51.1

Guided Practice

Write the number in scientific notation.

for Example 1

4000 ANSWER 10 341.

7,300,0002.

63,000,000,0003.

ANSWER 10 67.3

ANSWER 10 10 6.3

230,0004. ANSWER 10 52.3

Guided Practice

Write the number in scientific notation.

for Example 1

2,420,000

ANSWER 10 62.425.

1056. ANSWER 10 21.05

REASONING Write the number 3 in scientific notation.

7. 10730

ANSWER 10 83