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Chapter 4 D ecimal multiplication and division

Chapter 4 D ecimal multiplication and division. By: Cariera O and Karlie A. Review Words. Decimal Product Dividend Divisor Quotient Find the product or quotient. Estimate the product or quotient. Round a decimal. Find the sum or difference.

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Chapter 4 D ecimal multiplication and division

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  1. Chapter 4Decimal multiplication and division By: Cariera O and Karlie A

  2. Review Words • Decimal • Product • Dividend • Divisor • Quotient • Find the product or quotient. • Estimate the product or quotient. • Round a decimal. • Find the sum or difference.

  3. 4.1 Multiplying decimals and whole numbers. vocabulary words Review the content When you multiply a decimal and a whole number, the number of decimal places in the product is the same as the number of decimal places in the decimal factor. EXAMPLE: 0.006 x 7 = 0.042 Write a zero as a placeholder so that the answer has three decimal places. • Commutative property of multiplication. • Associative property of multiplication.

  4. 4.2The distributive property Vocabulary words Review content • You can multiply a number and a sum by multiplying the number by each part of the sum and then adding these products. The same property applies with subtraction. • Example: • Numbers 3 ( 4+6 ) = 3( 4 ) + 3(6) • Distributive property

  5. 4.3 Multiplying decimal Vocabulary words Review content • Multiplying decimals as you do whole numbers. Then place the decimal point. The number of decimal places in the product is the total number of decimal places in the factors. • 3.14 x 15.6 = 48.984 • Factor

  6. 4.4 Dividing by whole numbers Vocabulary words Review content • When dividing a decimal by a whole number, place the decimal point in the quotient above the point in the dividend. • 32.4 divided by 6 = 5.4 • Dividend • Divisor • Quotient

  7. 4.5Multiplying and Dividing by powers of Ten Vocabulary Review Content • To multiply whole number power of ten, you will move the decimal point one place to the right for each zero in the whole number power of ten. • To divide whole number power of ten, you would move the decimal point one place to the left for each zero in the whole number power of ten. • 3.995 x 100 = 399.5 • Power • exponent

  8. 4.6Dividing by decimals Vocabulary Review Content • When you divide by decimal, multiply both the divisor and the dividend by a power of ten that will make the divisor a whole number. • 2.5 divided by 3.75 = 1.5 • Dividend • Divisor • Quotient

  9. 4.7Mass and Capacity Vocabulary Review Content • Units of Mass: The mas of an object is the amount of matter it has. The gram (g) is a metric unit of mass. Two other metric units of mass are the milligram (mg) and the kilogram (kg). • Gram • Milligram • Kilogram • Liter • Milliliter • kiloliter

  10. 4.8Changing Metric Units Vocabulary Review Content • You can change from one unit to another in the metric system by multiplying or dividing by power of ten. • Chang to a smaller unit by mutipying. • Meter • Gram • liter

  11. THANKS FOR WATCHING

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