2 nd Week of EOG Review Book

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# 2 nd Week of EOG Review Book - PowerPoint PPT Presentation

2 nd Week of EOG Review Book. Divisibility Rules:. The rules for the following numbers: 2: when a number is even (20, 12, 16……) 3: Add the numbers up and if it is a multiple of three then it is divisible by three…(ex.. 36 = 3 + 6 = 9 which is a multiple of three)

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### 2nd Week of EOG Review Book

Divisibility Rules:

The rules for the following numbers:

2: when a number is even (20, 12, 16……)

3: Add the numbers up and if it is a multiple of three then it is divisible by three…(ex.. 36 = 3 + 6 = 9 which is a multiple of three)

4: The last two numbers are a multiple of four…. (ex…228)

5: The number has to end in a five or zero …(ex…15, 20, 30……)

6: If the number is divisible by two and three then it is divisible by six.

9: the sum of the digits is a multiple of nine…..(ex…..33 = 3 + 3 = 9 which is a multiple of nine)

10: The number ends in zero….(ex….10, 200, 340…..)

Converting Fractions to Decimals
• To convert a fraction to a decimal, divide the numerator by the denominator and add a decimal and two zero in the dividend. Keep adding zeros until it terminates or repeats.
• You can also convert to decimals by getting the denominator to equal to 100. What ever you did to the denominator you do to the numerator.
• 1. ¾ 2. 2/3 3. 3/5 4. 2/7
Converting Fractions to Decimals
• 4/5
• 3/5
• 7/9
• 3/16
• 2/3
• 5/8
• ½
• 5/12
Converting Mixed numbers to decimals
• If there is a whole number with a fraction, write the whole number to the left of the decimal point. Then change the fraction to a decimal.
• Change the fraction by dividing the denominator into the numerator and adding a decimal and two zero or by setting the bottom denominator to a 10, 100, or 1,000.
• Example)
• 1. 4 1/10 2. 16 2/3 3. 12 7/8
Changing Decimals to Fractions
• 8 5/11
• 15 3/5
• 13 2/3
• 30 1/3
• 3 ½
• 1 7/8
• 7 1/4
Changing Decimals to Fractions
• Step1: Copy the decimal without the point. This will be the top number of the fraction
• Step 2: The bottom number is a 1 with as many 0’s after it as there are digits in the top number.
• Step 3: You then need to reduce the fraction

1. 0.2 2. 0.65 3. 0.125

Changing Decimals to Fractions
• 0.55
• 0.6
• 0.12
• 0.75
• 0.82
• 0.03
• 0.96