TAILIEUCHUNG - The gre anlytycal writting section 4

Tham khảo tài liệu 'the gre anlytycal writting section 4', ngoại ngữ, anh ngữ phổ thông phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | -------------------------- THE GRE QUANTITATIVE SECTION ----------------------------------- X - - - - - X - - - A simple rule for remembering these patterns is that if the signs are the same when multiplying or dividing the answer will be positive. If the signs are different the answer will be negative. Adding Adding two numbers with the same sign results in a sum of the same sign and - - - When adding numbers of different signs follow this two-step process 1. Subtract the absolute values of the numbers. 2. Keep the sign of the number with the larger absolute value. Examples -2 3 Subtract the absolute values of the numbers 3 - 2 1. The sign of the number with the larger absolute value 3 was originally positive so the answer is positive. 8 -11 Subtract the absolute values of the numbers 11 - 8 3 The sign of the number with the larger absolute value 11 was originally negative so the answer is -3. Subtracting When subtracting integers change the subtraction sign to addition and change the sign of the number being subtracted to its opposite. Then follow the rules for addition. Examples 10 - 12 10 -12 -2 -5 - -7 -5 7 2 Remainders Dividing one integer by another results in a remainder of either zero or a positive integer. For example 1 R1 155 ------------------------- THE GRE QUANTITATIVE SECTION -------------------------------- 4 5 4 1 If there is no remainder the integer is said to be divided evenly or divisible by the number. When it is said that an integer n is divided evenly by an integer x it is meant that n divided by x results in an answer with a remainder of zero. In other words there is nothing left over. Odd and Even Numbers An even number is a number divisible by the number 2 for example 2 4 6 8 10 12 14 and so on. An odd number is not divisible by the number 2 for example 1 3 5 7 9 11 13 and so on. The even and odd numbers are also examples of consecutive even numbers and consecutive odd numbers because they differ by two. Here are some helpful rules for how

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