Transcript Round Each to the Given Place

Round Each to the Given Place
Hundreds
657
Hundredths
.0728
Thousands
2,342
Ten-Thousandths
.0003695
Tens
88
Thousandths
.00235
Millions
4,686,527
Tenths
.2135624
Ten-Thousands
72,118
Hundred-Thousandths
.00004532
Answers
Hundreds
700
Hundredths
.07
Thousands
2,000
Ten-Thousandths
.0004
Tens
90
Thousandths
.002
Millions
5,000,000
Tenths
.2
Ten-Thousands
70,000
Hundred-Thousandths
.00005
Scientific Notation
• A form of writing numbers that include too
many digits to be easily written in standard
decimal form.
– Utilizes exponents with a base of 10
– Involves rounding numbers by replacing them
with zeros
Practice Multiples of 10
• Write the real number form for each of the
following
5
10
7
10
10
2
10
4
10
2
10
7
Examples
657  6.57  10
2
.0728  7.28  10 2
2,342  2.34  103
.0003695  3.70  10 4
88  8.8  101
.00235  2.35  10 3
72,118  ___ 10
__
.00004532  ____ 10
__
Why?
• Why would we use scientific notation?
• Why do you think it is called scientific
notation?
• Can you give an example of a real life
situation where scientific notation would be
useful?