   # Elementary Arithmetic and 68453i65409u6yit -548u Yp95843w

Powerful Essays
Unit – Rates, Ratios, Proportions

Rates

A car travelled 348 km in 4 hours .Write the unit rate that describes how fast the car was going.

348 4 4 4 87 1 The car travelled 87 km per hour.

Ratios
A ratio is comparison of measured quantities.
It can be written in two ways:
1. 5:6
2. 5/6

Proportions A proportion is a statement that two ratios are equal.
1. 4:6 = 2:3
2. 4/6 = 2/3

Fractions into Decimals Divide numerator with denominator
1. 2/5 = 0.4
2. 6/20 =0.3 Fractions into Percent
Change the fraction to decimal first. Then multiply the decimal by 100.
1. 4/5 = 0.4 =0.4 * 100
=40%

2. 8/40
=0.2 * 100
=20%

Decimals to fraction
Count the decimal places. Reduce
1. 0.432
=432/1000
=54/125
2. 1.52
=152/100
=76/50
=38/25

Decimal to Percent

Multiply with the decimal with 100.
1. 0.45
=0.45 * 100
=45%
2. 0.325
=0.325 * 100
=32.5%

Percent to Fraction
Take the fraction and place it over 100.
1. 25%
=25/100
=1/4
2. 16%
=16/100
=4/25 Percent to Decimal
Take the percent and place it over 100. Then, divide numerator with denominator.
1. 30%
=30/100
=0.3
2. 80%
=80/100
=0.8

Unit – Powers
We use powers to express repeated multiplication. “3” is the Base.
“5” is the exponent.
Writing powers
Write each of them as power.
1. 3 * 3 * 3 * 3
=
2.
=2 * 2 * 2 * 2
Importance of brackets.

Base = -2
Exponent = 4
Here the

## You May Also Find These Documents Helpful

• Satisfactory Essays

Lesson 1-8 2. 16 4. 17 Lesson 1-9 5.A. 5463 divided by 9= 607. Multiply 607 by 9 to check your answer. B. 6.00-3.98= 2.02 C. 5.70x0.03= .1710 I moved the decimal over 4 places. D. 4 1/2 divided by 6= 9/12 or ¾. E. 18 1/5-12 2/3= 5 8/15 I found a common denominator. F. 25.75+40.00= 65.75 G. 546.30 divided by .09 move the decimal over two to the right and you get 6070 as your answer. H. 6 divided by 4 ½ flip the second fraction and you get 1 1/3 as the answer. I. 13 7/8+6 1/3 find a common denom…

• 347 Words
• 2 Pages
Satisfactory Essays
• Satisfactory Essays

1.PERCENT ● DEFINITION OF PERCENT - Percent means parts per 100 The symbol is % Example: 25% means 25 per 100 ● CONVERSION TECHNIQUES - ✔Changing percent to decimal Change a percent to a decimal. Move the decimal point two places to the left. In a percent, the decimal point would come at the end of the last number (for 75%, envision that it looks like 75.) Examples: 75% converts to .75 40% converts to .40 3.1% converts to .031 ✔Changing decimal or whole number to percent Change a decimal…

• 2614 Words
• 11 Pages
Satisfactory Essays
• Satisfactory Essays

Fractions are ways to represent parts of a whole. Common fractions are ½ and ¾. These are proper or regular fractions. Some fractions are called mixed numbers. These are represented by a whole number with a fraction (proper fraction). 1 ½ and 2 ¾ are good examples. An improper fraction has a larger number on the top than on the bottom, such as 9/8. I will explain how to convert these fractions to decimals. I will show you how to change an improper fraction to a mixed number. Operations (addition…

• 775 Words
• 3 Pages
Satisfactory Essays
• Satisfactory Essays

Grade I MTAP Math Challenge Questions and Reviewer I Math Challenge Grade I Score: __________ Name: ______________________________ School: ___________________________ __________1. Joe found out he can do 6 problems in 15 minutes. About how long will it take Joe finish 18 problems? __________2. Manie found out he can do 5 problems in 23 minutes. About how long will it take Manie finish 20 problems? __________3. Ann took 55 minutes to do her assignment. Rosa took 12 minutes less than…

• 1482 Words
• 6 Pages
Satisfactory Essays
• Good Essays

Higher Arithmetic Higher arithmetic, also known as the theory of numbers, is known for its basics of the natural numbers, simple numbers. The numbers, 1, 2, and 3 are numbers that are known as natural numbers. H. Davenport of Cambridge University once said “…in all the records of ancient civilizations there is evidence of some preoccupation with arithmetic over and above the needs of everyday life” (Introduction). The theory of numbers being a science, is simply just a creation invented for the…

• 881 Words
• 4 Pages
Good Essays
• Good Essays

formalized, in his book Elements, the fundamentals of arithmetic, as well as showing his lemma, which he used to prove the Fundamental theorem of arithmetic. Euclid's Elements also contained a study of Perfect numbers in the 36th proposition of Book IX. Diophantus of Alexandria wrote Arithmetica, containing 130 equations and treating the essence of problems having only one solution, fraction or integer. Congruence relation Modular arithmetic can be handled mathematically by introducing a congruence…

• 481 Words
• 2 Pages
Good Essays
• Good Essays

The Devils Arithmetic is a young adult fiction novel that has many fascinating elements. The story could be a great tool introducing young readers to the Holocaust. The book both differs yet shares some similarities to other holocaust novels. The story has a strange change of setting early in the story. There are many characters and they all have traits that reflect those who actually experience the Holocaust and the Nazi's acts against humanity. The story begins with a young Jewish girl, Hannah…

• 584 Words
• 3 Pages
Good Essays
• Satisfactory Essays

Arithmetic Progressions (AP) An arithmetic progression is a list of numbers where the difference between successive numbers is constant. The terms in an arithmetic progression are usually denoted as T1 , T2 , and T3 , where T1 is the initial term in the progression, T2 is the second term, and so on. Thus, Tn is the nth term of the arithmetic progression. An example of an arithmetic progression is…. 2; 4; 6; 8; 10; 12; 14; Since the difference between successive terms is constant, we have……

• 379 Words
• 2 Pages
Satisfactory Essays
• Satisfactory Essays

Running Head: MARKETING ARITHMETIC Marketing Arithmetic  If the retail price is fixed at \$1.00, what effect does increasing the retail and wholesale margins have on the manufacturer’s selling price? Explain why this is the case. Increasing both the retail margin/unit and the wholesale margin/unit decreases the manufacturers selling price because it decreases the price needed to pay the cost of the product and increases the profit. Define unit contribution…

• 422 Words
• 2 Pages
Satisfactory Essays
• Satisfactory Essays

call, breakfast, work, lunch, work, supper, and work. The breakfast was all potatoes and the work was usually work to keep the camp itself running such as the kitchen, cleaning, and guarding the houses. 11. The significance of the title Devil’s Arithmetic is that it is showing you the way the guard and Nazis were thinking like. They would punish you for the little things such as saying a word wrong or talking…

• 553 Words
• 2 Pages
Satisfactory Essays