Conversions
convert to standard form:
4.25 x 10^5
425,000
compare, using <, >, or =:
4.37 x 10^5 ____ 4.73 x 10^5
<
An ant carries a spec of food home that is 2.34 X 10^-3 inches and his wife carries home a spec of food that is 4.56 X 10^-2 . What is the combined length of their specs of food?
0.04794 inches
What property is illustrated by the equation
4 + (3 + 5) = (4 + 3) + 5
Associative
convert to scientific notation:
the mass of the earth's atmosphere
5,700,000,000,000,000 tons
5.7 x 10^15
Compare, using <, >, or =:
8.7 x 10^4 ____ 4.38 X 10^7
<
Earth is approximately 9.3 X 10^7 miles from the sun and Saturn is approximately 8.87 X 10^8 miles from the sun Approximately, how much further is Saturn from the sun than Earth? Write your answer in scientific notation.
7.94 x 10^8 miles
Give an example of an irrational number.
answers vary
convert to standard form:
8.73 x 10^-3
0.00873
compare, using <, >, or =:
9.2 x 10^-5 _____ 9.2 x 10^-8
>
The Earth has a mass of 1 x 10^25 kg. Neptune's mass is 1.8 x 10^27 kg. How many times greater is Neptune's mass than Earth's mass?
180 times bigger
solve for x:
3(x - 4) = 2x + 6
x = 18
convert to scientific notation:
the mass of the smallest insect, a parasitic wasp
0.00000492 grams
4.92 x 10^-6
3.42 x 10^-4 _____ 0.000342
=
3 x 10^5 km/sec. Earth is about 1.5 x 10^8 km from the sun. How long does it take for light from the sun to reach the earth?
500 seconds
Identify the slope and y-intercept of the line
y = 2/3x - 5
slope = 2/3
y=intercept = -5
Which number is in correct scientific notation?
a. 4.37 x 100^5
b. 83.2 x 10^-5
c. 5.42 x 10^-8
d. 0.22 x 10^12
c
List in order from least to greatest:
0.00035
8.7 x 10^-4
5.68 x 10^-6
0.000043
5.68 x 10^-6
0.000043
0.00035
8.7 x 10^-4
Earth's crust contains approximately 120 trillion metric tons of gold. One metric ton of gold is worth about $11.5 million. What is the approximate value of the gold in the Earth's crust?
$1.38 x 10^21
Find two numbers whose sum is -5 and whose product is -84.
-12 and 7