Pre-Algebra Demystified
Division of Whole Numbers In division, the number under the division box is called thedividend. The number outside the division ...
Step 4: 1 37 Þ 543 37 173 Bring down 3 Repeat Step 1: 14 37 Þ 543 Divide 3 into 17 37 (Note: The answer 5 is too large, so try 4 ...
Division can be checked by multiplying the quotient by the divisor and seeing if you get the dividend. For the previous example, ...
EXAMPLE Find the total calories in a meal consisting of a cheeseburger (550 calories), French fries (352 calories), and a soft d ...
DIVISION When you are given a total and are asked to find how many items in a part, you divide. EXAMPLE If 96 calculators are pa ...
Quiz Name 56,254. (a) five ten thousands, six thousands, two hundreds, five tens, and four ones (b) fifty-six million, two hund ...
Add 1,259þ43,756,þ 200 þ8,651. (a) 53,866 (b) 53,686 (c) 53,668 (d) 53,863 Subtract 900561. (a) 393 (b) 933 (c) 339 (d) 449 Su ...
Divide 5,48187. (a) 36 (b) 73 (c) 63 (d) 37 R15 Divide 190,314654. (a) 291 (b) 290 (c) 271 (d) 290 R13 Divide 16,177647. (a) ...
CHAPTER 2 Integers Basic Concepts In Chapter 1 we used the set ofwhole numberswhich consists of the numbers 0,1,2,3,4,5,....Inal ...
Each integer has anopposite. The opposite of a given integer is the cor- responding integer, which is exactly the same distance ...
EXAMPLE Find the value of(þ41). SOLUTION The opposite of 41 is41. Hence,ð 41 Þ¼41. EXAMPLE Find the value ofð 17 Þ. SOLUTI ...
Given two integers, the number further to the right on the number line is the larger number. EXAMPLE Compare5 with2. SOLUTION ...
Addition of Integers There are two basic rules for adding integers: Rule 1: To add two integers with like signs (i.e., both inte ...
Rule 2: To add two numbers with unlike signs (i.e., one is positive and one is negative), subtract the absolute values of the nu ...
EXAMPLE Addð 3 Þþð 4 Þþ(þ2)þ(þ8)þð 5 Þ: SOLUTION ð 3 Þþð 4 Þþðþ 2 Þþðþ 8 Þþð 5 Þ ¼ð 7 Þþðþ 2 Þþðþ 8 Þþð 5 Þ ¼ð 5 Þþðþ 8 ...
Subtraction of Integers In arithmetic, subtraction is usually thought of as ‘‘taking away.’’ For exam- ple, if you have six book ...
EXAMPLE Subtractð 10 Þð 3 Þ: SOLUTION ð 10 Þð 3 Þ¼ð 10 Þþðþ 3 Þ ðopposite of 3 Þ ¼ 7 Hence,ð 10 Þð 3 Þ¼ 7 : EXAMPL ...
Addition and Subtraction In algebra, theþsign is usually not written when an integer is positive. For example: ðþ 8 Þþðþ 2 Þ is ...
ANSWERS 1. 8 2. 14 3. 5 4. 5 5. 4 Multiplication of Integers For multiplication of integers, there are two basic rules: Rule ...
EXAMPLE Multiply (þ9)ð 5 Þ: SOLUTION Multiply 9 5 ¼45 and give the answer a(negative) sign. Hence, (þ9) ð 5 Þ¼45. Math No ...
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