1. 2nd Week of EOG Review Book

2. 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 = = 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……)

3. 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 = = 9 which is a multiple of nine)
10: The number ends in zero….(ex….10, 200, 340…..)

4. What are these numbers divisible by putting an “X” in each box that it is divisible by:2 3 4 5 6 9 10 8
220 15
270 11

5. 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 What ever you did to the denominator you do to the numerator.
1. ¾ 2. 2/ / /7

6. Converting Fractions to Decimals
4/5
3/5
7/9
3/16
2/3
5/8
5/12

7. 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)
/ / /8

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

9. 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

10. Changing Decimals to Fractions
0.55
0.6
0.12
0.75
0.82
0.03
0.96