The attack on Pearl Harbor also launched a rash of fear about national security, especially on the West Coast. Prior to Pearl Harbor, the United States had been involved in a non-combat role, through the Lend-Lease Program that supplied England, China, Russia, and other anti-fascist countries of Europe with munitions. In his speech to Congress, President Franklin Delano Roosevelt declared that the Japanese attack on Pearl Harbor on December 7, 1941, was "a date which will live in infamy." The attack launched the United States fully into the two theaters of World War II – Europe and the Pacific. Solution: George received 7 × 10⁴ or 70,000 votesĬlearly, Melissa won the election.Japanese-American Incarceration During World War II The total number of votes cast for each candidate is: Solution: When multiplying the number by the power of 10, we move the decimal points to the right side.Įxample 3: George and Melissa are contending for the position of mayor. So, we can write the given number as 7th power of ten or 10 7.Įxample 2: Find the product of 5.65 × 10⁴. Solution: There are 7 zeros in 10,000,000. Solved ExamplesĮxample 1: Write 10,000,000 as a power of 10. For example, a small number like 0.00005 can be written as 5 × 10 -5. If the number is less than 1, then the exponent will be a negative number. In case the number is greater than 1, then the exponent (in the scientific notation) is a positive number. For example, a large number like 50,000,000 can be represented as 5 × 10 7.Ī complicated number like 456,000 can be written as 456 × 10 3 or 4.56 × 10 5, which is a scientific notation.Ī scientific notation of a positive number is to express the number as the product of a number less than 10 and a power of 10. So, scientists use a notation where they write the number in terms of the power of 10. Such numbers can be troublesome to use in their original form. For example, if scientists have to send a spacecraft to the moon, it should travel at least 240,000 miles, which is the distance between Earth and the Moon. Scientists and engineers often encounter very big or small numbers. When the exponent is negative, the value is always less than 1.Īny number raised to the power 0 is one, and ten is no exception. The value is a decimal point followed by as many zeros as one less than the exponent and a 1. In general, we can write the value in decimals by observing the exponent. When the exponent is negative, we can apply the rules of exponent, x -a = 1/x a, and find the value.įor example, 10 -4 = 1/10 4 = 1/10000 = 0.0001 The number of zeros in the product is equal to the exponent. When the exponent is positive, we can write the power in the expanded form and find the product.įor example, 10 4 = 10 × 10 × 10 × 10 = 10,000. The exponent of a power of ten can be a positive or negative integer. The exponent of the power tells us how many times the number is multiplied to itself.įor example, when the exponent is 3, we multiply 10 by itself 3 times.ġ0 3 = 10 × 10 × 10, this is also called the expanded form of the power. Power of any number is an expression that represents repeated multiplication of the number.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |