Converting
Add or Subtract
Multiply
Divide
Word Problems
100
Write 80,000 in scientific notation
8X10^4
100
(5X10^6) + (3X10^6)
8X10^6
100
(3X10^2)(2X10^4)
6X10^6
100
(9X10^5)/(3X10^3)
3X10^2
100
On a certain​ planet, Continent X has area 7.06×10^7 square miles and Continent Y has area 6.75×10^7 square miles. Which continent is​ larger? By how many square miles is its area​ greater?
The area of Continent X is 3.1×10^6 square miles greater than the area of Continent Y.
200
Write 2.4X10^2 in standard form
240
200
(9.2X10^3) - (4.4X10^3)
4.8X10^3
200
(4X10^-2)(1.2X10^-10)
4.8X10^-12
200
(8X10^-5)/(4X10^2)
4X10^-7
300
Write 25.7X10^-3 in standard form
0.0257
300
(9.8X10^2) + (3.9X10^2)
1.37X10^3
300
(3X10^2)(7X10^1)
2.1X10^4
300
(24X10^4)/(2X10^2)
2.4X10^3
300
A certain star is 2.4X10^2 light years from the Earth. One light year is about 5.9×10^12 miles. How far from the earth​ (in miles) is the​ star?
1.416 miles
400
Write 923X10^4 in scientific notation
9.23X10^6
400
(2.4X10^3) - (6.7X10^2)
1.73X10^3
400
(3.1X10^8)(5X10^-4)
1.55X10^5
400
(10X10^-2)/(5X10^-4)
2X10^2
400
A scientist has two colonies of​ bacteria, A and B. Colony A has 6.6X10^7 bacteria. Colony B has 3,300,000 bacteria. Express the number of bacteria in Colony B in scientific notation. The number of bacteria in Colony A is how many times the number of bacteria in Colony​ B?
Colony B: 3.3X10^6 Colony A is 20 times the number of bacteria in Colony B.
500
Write 83X10^-3 in scientific notation
8.3X10^-2
500
(9.1X10^-4) + (35.4X10^-3)
3.631X10^-2
500
(6X10^-3)(9X10^8)
5.4X10^6
500
(24X10^-3)/(2X10^-4)
1.2X10^2
500
Total consumption of fruit juice in a particular country in 2006 was about 2.17 billion gallons. The population of that country in 2006 was 500 million. What was the average number of gallons of fruit juice consumed per person in the country in​ 2006?
4.3 gallons
M
e
n
u