Grade 5: Number Sense - Fractions & Decimals

Transcription

1 Grade 5: Number Sense - Fractions & Decimals Unit 8, Lessons 1-12, Pages The star highlights important ideas. The globe links to the web. Click these figures to show the answer. Links to an activity you can print. Need to review what numerator and denominator means? Click To review identifying fractions click

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3 Fractions compare one part of the whole to the entire whole. The denominator tells how many equal parts are in the whole.

4 Fractions Proper Fractions Mixed Numbers Improper Fractions

5 Fractions less than 1 whole Proper Fractions numerator always smaller than the denominator

6 greater than 1 whole Fractions numerator always larger than the denominator Improper Fractions

7 Fractions Mixed Numbers Have a whole number and a fraction always greater than 1 can also be expressed as an improper fraction

8 Which fraction of each figure is dark grey? How many different fractions can you write each time? 10/36 20/40 5/18 20/72 15/54 10/205/101/2 Look at Equivalent Fractions more closely.

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15 Use interactive fraction bars.

16 Play the Equivalent Fraction Game

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18 Fractions and Mixed Numbers Clickto discover more about Improper Fractions and Mixed Numbers

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20 #3 What fraction is represented? Write an equivilent fraction as well.

21 #3 b) c) What fraction is represented? Write an equivilent fraction as well.

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24 Comparing and Ordering Fractions Fractions can be compared or ordered by locating them on same-size number lines. Fractions can be compared or ordered if they have the same numerator or the same denominator. To compare and order fractions click

25 Here are 3 ways to order fractions:

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27 Show which fraction is largest. 7/8 2/3 4/12

28 Show which fraction is largest. 7/8 2/3 4/12

29 Practice comparing fractions.

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32 Try this with a partner. A larger denominator means more---and therefore smaller---equal parts in the whole.

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35 Relating Fractions to Decimals You can write fractions with denominators of 10 and 100 as decimals.

36 If a fraction does not have a denominator of 10 or 100, try to find an equivalent fraction that does.

37 If a fraction does not have a denominator of 10 or 100, try to find an equivalent fraction that does.

38 If a fraction does not have a denominator of 10 or 100, try to find an equivalent fraction that does.

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40 #4

41 #7

42 Converting decimals to fractions 4.31 = 5.56 = 4.24 = 7.05 = = 1.3 = 16.5 = 6.3 = 56.3 = 45.8 = What is the rule to follow?

43 Converting decimals to fractions (print) 3.35 = 7.67 = 6.13 = 8.02 = = 1.7 = 8.6 = 4.2 = 14.6 = = What is the rule to follow?

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47 275 #1

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50 Relating Fractions to Division

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55 #10

56 Karen jumped m in the long jump. Write how far she jumped as a decimal. Convert it to an improper fraction. Divide the numerator by the denominator.

57 Karen jumped m in the long jump. Write how far she jumped as a decimal. Convert it to an improper fraction. Divide the numerator by the denominator.

58 Karen jumped m in the long jump. Write how far she jumped as a decimal. Convert it to an improper fraction. Divide the numerator by the denominator.

59 Karen jumped m in the long jump. Write how far she jumped as a decimal. Convert it to an improper fraction. Divide the numerator by the denominator.

60 Karen jumped m in the long jump. Write how far she jumped as a decimal. Convert it to an improper fraction. Divide the numerator by the denominator.

61 Karen jumped m in the long jump. Write how far she jumped as a decimal. Convert it to an improper fraction. Divide the numerator by the denominator.

62 Karen jumped m in the long jump. Write how far she jumped as a decimal. Convert it to an improper fraction. Divide the numerator by the denominator.

63 Multiplying Decimals with Tenths and Hundredths Denise drove around the track 3 times. About how far did she travel? about 4.5km Find the exact distance. 4.8km Karter's Korners 1.6km track 10 exciting twists and turns

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65 Five students get together to buy a video game for Mary's birthday. The game costs $88.15 How much will each student pay, assuming that they share the cost equally?

66 #4 Jonestown Go Kart Track

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68 #10

69 Multiplying Decimals with Hundredths #1

70 #3 Multiplying a decimal by a whole number is like multiplying two whole numbers because you use exactly the same steps. It's different because you need to put a decimal point in the product, unless the product is a whole number.

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72 page 293 #2

73 Dividing Decimals with Tenths and Hundredths

74 296 # 1 Dividing a decimal by a whole number involves the same process as dividing a whole number by another whole number. Estimation can be used to place the decimal point in the quotient.

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77 page 299 #3

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82 Attachments Grade 4 Geometry U7 Coordinates Practice.pdf Grade 4 Measurement Elapsed Time.pdf Measurement Telling Time.pdf Numerator Denominator Explained.pdf Practice Identifying Fractions Worksheet.pdf