 ## Presentation on theme: "1-1. 1-2 Chapter 1 Whole Numbers; How to Dissect and Solve Problems McGraw-Hill/Irwin Copyright © 2003 by The McGraw-Hill Companies, Inc. All rights reserved."— Presentation transcript:

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1-3 Use place values to read and write numeric and verbal whole numbers Round whole numbers to the indicated position Use blueprint aid for dissecting and solving a word problem Whole Numbers; How to Dissect and Solve Word Problems #1 Learning Unit Objectives Reading, Writing, and Rounding Whole Numbers LU1.1

1-4 Add whole numbers; check and estimate addition computations Subtract whole numbers; check and estimate subtraction computations Whole Numbers; How to Dissect and Solve Word Problems #1 Learning Unit Objectives Adding and Subtracting Whole Numbers LU1.2

1-5 Multiply whole numbers; check and estimate multiplication computations Divide whole numbers; check and estimate computations Whole Numbers; How to Dissect and Solve Word Problems #1 Learning Unit Objectives Multiplying and Dividing Whole Numbers LU1.3

1-6 Figure 1.1 Whole-number place-value chart Hundred billions Hundred trillions Ten Thousands Hundred Thousands ThousandsHundredsComma Ten trillionsTrillions Ten billionsBillions Comma Hundred millions Ten millionsMillions Comma TensOnes 3, 5 2 6, 4 3 9, 0 1 7, 8 2 1

1-7 Rounding Whole Numbers 6764 6864 Step 1. Identify the place value of the digit you want to round Step 2. Identify the digit to the right. If 5 or more, increase the identified digit by 1, if less than 5 do not change Step 3. Drop all digits to the right of the identified digit 6800

1-8 How to Dissect and Solve a Word Problem Organization and persistence

1-9 Adding Whole Numbers 3 Steps 1. Align the numbers according to their place values 2. Add the units column. If the sum is more than 9, write the units digit and carry the tens digit. 3. Moving to the left, repeat Step 2 until all place values are added. Example 2 1 1 1,362 5,913 8,924 6,594 22,793

1-10 Subtracting Whole Numbers 3 Steps 1. Align the minuend and subtrahend 2. Begin the subtraction with the units digits. Write the difference below the column. If the units digit in the minuend is smaller than the digit in the subtrahend, borrow 1 from the tens digit in the minuend. 3. Moving to the left, repeat Step 2 Example 6 14 7 10 74,580 -56,114 18,466

1-11 Multiplication of Whole Numbers 4 Steps 1. Align the multiplicand and multiplier at the right. 2. Multiplying the right digit of the multiplier with the right digit of the multiplicand. Keep multiplying as you move left through the multiplicand. 3. Your partial product right digit or first digit is placed directly below the digit in the multiplier that you used to multiply. 4. Add the partial products to get the final product. Example 418 x52 836 20 90 21,736

1-12 Multiplication of Whole Numbers 3 Steps When zeros are at the end of the multiplicand or the multiplier, or both, disregard the zeros and multiply Count the number of zeros in the multiplicand and multiplier. (4) Attach the number of zeros counted in Step 2 to your answer Solution 65 x 42 130 260 27,300,000 Example 65000 x 420

1-13 Division of Whole Numbers How many times one number (Divisor) is contained in another number (Dividend). The result is the Quotient. Example 18 Quotient Divisor 15 270 Dividend 15 120 0

1-14 Proper use of the calculator