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Everyday Math Grade 4 – Lesson 4.4 Decimal Addition and Subtraction
Copyright © 2011 Kelly Mott
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Lesson Components: Part 1: Math Boxes 4.4 Page 90 Part 2: Review
Part 3: PowerPoint Lesson Part 4: Math Journal Page 88 Part 5: Math Journal Page 89 Part 6: Additional Sheets Add and Subtract Decimals Sheet Math Masters Page 54 Copyright © 2011 Kelly Mott
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Math Boxes Lesson 4.4 Page 90 Copyright © 2010 Kelly Mott
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Math Box 1: Copyright © 2010 Kelly Mott
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Math Box 2: Copyright © 2010 Kelly Mott
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Math Box 3: Copyright © 2010 Kelly Mott
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Math Box 4: Copyright © 2010 Kelly Mott
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Math Box 5: Copyright © 2010 Kelly Mott
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Everyday Math Grade 4 – Lesson 4.4 Decimal Addition and Subtraction
Copyright © 2011 Kelly Mott
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PART 1: REVIEW Copyright © 2011 Kelly Mott 11
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Place Value When we write numbers, the position or “place” of each number is important. Copyright © 2011 Kelly Mott
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= .3 or 10 The Tenths Place The first place to the right of the
decimal represents the tenths place. EXAMPLE: 3 10 = .3 or Copyright © 2011 Kelly Mott
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= or The Tenths Place Let’s Practice.
Write the decimal and the fraction for each. = or Copyright © 2011 Kelly Mott
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.26 or = 100 The Hundredths Place The second place to the right of the
decimal represents the hundredths place. 26 100 .26 or = Copyright © 2011 Kelly Mott
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= or The Hundredths Place Let’s Practice.
Write the decimal and the fraction for each. = or Copyright © 2011 Kelly Mott
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Mixed Numbers A mixed number is a whole number and a fraction or a part of a whole. 8 10 2.8 or 2 Copyright © 2011 Kelly Mott
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Mixed Numbers or Copyright © 2011 Kelly Mott
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Mixed Numbers or Copyright © 2011 Kelly Mott
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Write the Decimal 5 tenths 50 hundredths Copyright © 2011 Kelly Mott
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Write the Decimal 7 hundredths 6 tenths Copyright © 2011 Kelly Mott
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Comparing Decimals When we compare numbers, we often use symbols.
Copyright © 2011 Kelly Mott
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Comparing Decimals When comparing numbers, think of Pac Man or an alligator. They EAT the BIGGER number. Copyright © 2011 Kelly Mott
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Comparing Decimals Use the >, <, or = sign to complete the following: Copyright © 2011 Kelly Mott
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Comparing Decimals Use the >, <, or = sign to complete the following: Copyright © 2011 Kelly Mott
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Comparing Decimals Use the >, <, or = sign to complete the following: Copyright © 2011 Kelly Mott
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Comparing Decimals Use the >, <, or = sign to complete the following: Copyright © 2011 Kelly Mott
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Compare ( > < =) . . H Tens Ones Tenths Hundredths H Tens Ones Tenths Hundredths . . . . Copyright © 2011 Kelly Mott
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Compare ( > < =) . . H Tens Ones Tenths Hundredths H Tens Ones Tenths Hundredths . . . . Copyright © 2011 Kelly Mott
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ORDER: LEAST TO GREATEST
Line up the numbers. Then put them in order. Cross out the numbers as you go. Now put them in order from least to greatest: ________ ________ ________ ________ ________ . H Tens Ones Tenths Hundredths Order these numbers: 0.04, 0.4, 0.44, 4.4 . . . . Copyright © 2011 Kelly Mott
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ORDER: GREATEST TO LEAST
Line up the numbers. Then put them in order. Cross out the numbers as you go. Now put them in order from greatest to least: ________ ________ ________ ________ ________ . H Tens Ones Tenths Hundredths Order these numbers: 0.02, 0.20, 0.22, 2.02 . . . . Copyright © 2011 Kelly Mott
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PART 2: ADD DECIMALS Copyright © 2011 Kelly Mott 33
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ADDING DECIMALS 1 2.78 9.10 + + Copyright © 2011 Kelly Mott
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ADDING DECIMALS 2 96.45 23.96 + + Copyright © 2011 Kelly Mott
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PART 3: SUBTRACT DECIMALS
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SUBTRACT DECIMALS 1 9.87 4.69 - - Copyright © 2011 Kelly Mott
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SUBTRACT DECIMALS 2 13.62 4.90 - - Copyright © 2011 Kelly Mott
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PART 4: ADD THREE DECIMALS
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ADDING DECIMALS 1 2.78 8.42 15.01 + + + Copyright © 2011 Kelly Mott
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PART 5: SOLVE & COMPARE ( > < =) Copyright © 2011 Kelly Mott 41
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SOLVE & COMPARE ( > < =)
PRACTICE 1: PRACTICE 2: = Copyright © 2011 Kelly Mott
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SOLVE & COMPARE ( > < =)
PRACTICE 3: – – 1.33 PRACTICE 4: 9.4 – – 4.7 = Copyright © 2011 Kelly Mott
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PART 5: Copyright © 2011 Kelly Mott 44
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Does this make sense? Copyright © 2011 Kelly Mott
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a Copyright © 2011 Kelly Mott
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Copyright © 2010 Kelly Mott
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HOMEWORK Page 88 Copyright © 2011 Kelly Mott
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HOMEWORK Page 89 Copyright © 2011 Kelly Mott
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Adding and Subtracting Decimals Worksheet
HOMEWORK Adding and Subtracting Decimals Worksheet Copyright © 2011 Kelly Mott
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HOMEWORK Math Masters Page 54 Copyright © 2011 Kelly Mott
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