Name ____________________________________ Date ___________________ Block ______________
Comparing Real Numbers Extra Practice
1. What is scientific notation and what is it used for?
2. Complete the table below:
Standard Form
Scientific Notation
5.6 x 102
.00534
5.19 x 10-4
3,020,000
.54
394,000
3. Helen told her friend that 10−4 = 10 × −4.
Do you agree with her? If so, explain why? If not, what should Helen have said?
4. Consider 10-3. Use the given numbers to find an equivalent fraction and decimal.
Fraction
−𝟏
𝟏𝟎𝟑
𝟏
𝟏𝟎𝟎𝟎
−𝟏
𝟑𝟎
−𝟏
𝟑𝟎𝟎
Decimal
.001
.003
-30.0
.0001
Name ____________________________________ Date ___________________ Block ______________
5. Fill in the Table Below. Fractions should be written in simplest form. Decimals do not
need to be expressed past the 1,000ths place.
Fraction
1
3
Decimal
Percent
.8
3
7
37.5%
.07
23
25
6. Write the fractions in the table above in descending order.
_________
_________
_________
_________
_________
_________
7. Write the following numbers in ascending order:
2.1 x 10-2
_________
2
0.34%
_________
9
_________
2%
_________
8. Which number is the greatest?
A) 4.5 x 10-8
B) 4.5 x 103
5
C) 48
4
9. Which number is greater than 9?
A) 44%
B)
3
5
C) . 09
D) 9.4 x 10-3
D) 45%