Second edition. Workbook 5. Laurie Sealy and Sandra Moore. BRIGHT_SPARKS_2e_WB5_pr3.indd 1 06/07/ :30

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1 CARIBBEAN Primary MATHEMATICS Second edition Workbook 5 Laurie Sealy and Sandra Moore BRIGHT_SPARKS_2e_WB5_pr3.indd 1 06/07/ :30

2 Macmillan Education Between Towns Road, Oxford OX4 3PP A division of Macmillan Publishers Limited Companies and representatives throughout the world ISBN Text Laurie Sealy and Sandra Moore 2012 Design and illustration copyright Macmillan Publishers Limited 2012 First published 2005 This edition 2012 All rights reserved; no part of this publication may be reproduced, stored in a retrieval system, transmitted in any form, or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the publishers. Designed by Oxford Designers and Illustrators Typeset by Orchard Publishing, South Africa Illustrated by Oxford Designers and Illustrators, Clive Goodyer and Tek-Art Cover design by Oxford Designers and Illustrators Printed and bound in Malaysia BRIGHT_SPARKS_2e_WB5_pr3.indd 2 06/07/ :30

3 Contents Unit 1: Number 1 4 Place value Value Expanded form Expanded numbers with regrouping 9 12 More expanded numbers with regrouping Forming numbers 10 Unit 2: Patterns, sequence and order 1 3 Counting and ordering Patterns 12 6 Revision 13 Unit 3: Operations: addition and subtraction 1 Pre-check 14 2 Rounding number and money 14 3 Addition practice 15 4 Addition with regrouping 15 5 Adding large numbers 16 6 Subtracting large numbers Regrouping with zeros 17 9 Adding and subtracting money Subtraction practice 18 Unit 4: Decimals 1 2 Place value: tenths Place value: hundredths 20 5 Rounding decimals Value 21 8 Ordering and comparing decimals 22 9 Rounding money Adding and subtracting decimals Problem solving 23 Unit 5: Multiplication 1 Check 24 2 Arrays 24 3 Square numbers / Square roots 26 4 Multiplying 2-digit numbers 26 5 Multiplying 3-digit numbers Multiplying large numbers 27 8 Multiples of Multiplying by 2-digit numbers Problem solving 29 Unit 6: Division 1 Factors 31 2 Prime numbers 31 3 Divisibility 31 4 Basic division 32 5 Using opposites: multiplying and dividing 32 6 Division speed tests 33 7 Division with remainders 33 8 Dividing larger numbers 34 9 Division using zeros Using long division and zeros Division with money Dividing by 2-digit numbers Understanding remainders 38 Unit 7: Fractions 1 Least (Lowest) Common Multiple 39 2 Greatest Common Factor (GCF) / Highest Common Factor (HCF) 39 3 Fraction of a set 39 4 Decimals and fractions 40 5 Equivalent fractions 40 6 Simplifying 41 7 Estimating 41 8 Improper fractions and mixed numbers 41 9 Comparing fractions Simple fraction addition Fractions subtracted from whole numbers Whole numbers subtracted from mixed numbers Mixed numbers subtracted from whole numbers Subtracting fractions with the same denominator Subtracting fractions with unlike denominators Estimating and problem solving Adding mixed numbers Subtracting mixed numbers Strategies for problem solving Practice with fractions 45 Unit 8: Geometry 1 Lines 46 2 Angles 46 3 Measurement of angle 47 4 Triangles 47 5 Flat shapes (2D) 48 6 Describing movement 49 7 Circles 49 BRIGHT_SPARKS_2e_WB5_pr3.indd 3 06/07/ :30

4 8 Lines of symmetry 50 9 Solid (3D) shapes Nets of solid shapes Enrichment: Coordinates on a grid Perimeter: review Perimeter problem solving Review of area Calculating area More area problems Right-angled triangles Volume Enrichment: Paths and borders, compound shapes 58 Unit 9: More decimals 1 Multiplying a decimal number by a whole number 59 2 Multiplying decimal numbers by decimal numbers 59 3 Problem solving 60 4 Dividing decimal numbers by a whole number 60 5 Adding zeros to the dividend 61 6 Problem solving: dividing decimal numbers 61 7 Multiplying and dividing decimals by 10, 100, Metric conversions 62 9 Metric conversions with decimal numbers 62 Unit 10: Measurement 1 Length 63 2 Longer lengths Working with units of length Practice with longer units of length 64 8 Mass 65 9 Converting between units of mass Capacity Converting between units of capacity 66 Unit 11: More fractions 1 Multiplying fractions 67 2 Multiplying fractions and whole numbers / mixed numbers 67 3 Cancelling 67 4 Sketching strategy for problem solving 68 5 Dividing fractions Multiplying and dividing fractions practice 69 Unit 12: Percent, ratio and proportion 1 Writing percents Percents and decimals Percent, decimals, fractions 72 6 Finding a percent of an amount 72 7 Changing fractions to percents 73 8 Practice 73 9 Discount Discount problem solving Wages and salaries problem solving Simple interest problem solving Ratio Simplifying ratios Proportion Ratio problem solving Practical use of proportion Working with scale Ratio/percent/fraction problem solving Mixed problem solving 81 Unit 13: Measurement: time 1 2 Units of time 82 3 Enrichment: 24-hour clock 83 4 Elapsed time 83 5 Calculating time 83 6 Practising elapsed time 84 7 Practice 84 Unit 14: Data, statistics and probability 1 Finding the mean 85 2 Working with the total 85 3 Bar graphs 86 4 Circle graphs / interpreting data 87 5 Probability 88 6 Venn diagrams 89 Review 1 90 Review 2 91 Review 3 92 Review 4 93 Review 5 94 Review 6 95 Review 7 96 BRIGHT_SPARKS_2e_WB5_pr3.indd 4 06/07/ :30

5 Unit 1: Number 1 Place value (Use with 1.1 A) Write the following as number words Place value (Use with 1.1 B) Write the place value of the underlined digit Unit 1: Number 5 BRIGHT_SPARKS_2e_WB5_pr3.indd 5 06/07/ :30

6 3 Place value (Use with 1.1 C) Fill in the missing numbers hundreds tens ones thousands hundreds tens ones thousands hundreds tens ones ten thousands thousands hundreds tens ones thousands hundreds tens ones ten thousands thousands hundreds tens ones thousands hundreds tens ones thousands hundreds tens ones ten thousands thousands hundreds tens ones ten thousands thousands hundreds tens ones Challenge Write the place value of each digit. a b Place value (Use with 1.1 D) Write the following using numerals. 1 sixty-three 2 seven hundred and four 3 two thousand, two hundred 4 four thousand, nine hundred and twenty 5 fourteen thousand 6 six hundred and thirteen 7 one thousand and ten 8 eighty-five thousand 9 thirty-five thousand, nine hundred and ninety-two 6 10 seven hundred and eighty-six thousand, one hundred and two Unit 1: Number BRIGHT_SPARKS_2e_WB5_pr3.indd 6 06/07/ :30

7 Challenge a What whole number comes after ? b What whole number comes before ? c What whole number comes before ? 5 Value (Use with 1.2 A) Write the value of the underlined digit Value (Use after 1.2 A) Write the value of the underlined digit Value (Use with 1.2 B) Write the value of each digit. Example 7032 = = 2 32 = Unit 1: Number 7 BRIGHT_SPARKS_2e_WB5_pr3.indd 7 06/07/ :30

8 = = = = = = = = 8 Expanded form (Use with 1.3 A) Write the following in expanded form = = = = = = = = = = Challenge Write the number. a = b = 8 Unit 1: Number BRIGHT_SPARKS_2e_WB5_pr3.indd 8 06/07/ :30

9 9 Expanded form (Use with 1.3 B) Change these numbers from expanded form to standard form = = = = = = = = = = 10 Expanded numbers with regrouping (Use with 1.3 C) Fill in the missing numbers to make each expanded form correct = hundreds + 7 tens + 5 ones = hundreds + 17 tens + 2 ones = 9 hundreds + 7 tens + ones = 3 thousands + hundreds + 12 tens + 8 ones = 9 ten thousands + 6 thousands + hundreds + 2 ones = thousands + 12 hundreds + 4 tens + 9 ones = 7 thousands + 5 hundreds + tens + 3 ones = 1 ten thousand + 4 thousands + ones = thousands + 5 hundreds = ten thousands + 5 thousands + 2 hundreds + 9 ones 11 Expanded numbers with regrouping (Use with 1.3 D) Write the number = = = = = Unit 1: Number 9 BRIGHT_SPARKS_2e_WB5_pr3.indd 9 06/07/ :30

10 12 more expanded numbers with regrouping (Use with 1.4 A and 1.4 B) Write the standard form. (Hint: In questions 1, 6 and 9, underline each group of numbers between the plus signs to make them easier.) = = 3 ( ) + (7 100) + (3 10) + (9 1) = = 5 (9 1000) + (6 10) = = = 8 ( ) + (4 1000) = = = 13 Forming numbers (Use with 1.5) For each question, use all these four numbers. 7, 3, 6, 4 1 Make the greatest possible number. 2 Make the smallest possible number. 3 Make the largest odd number. 4 Make the largest even number. 5 Make the smallest odd number. 6 Make the smallest even number. For each question, use all these four numbers. 8, 1, 2, 9 7 Make the largest odd number. 8 Make the smallest even number. 9 Make the smallest odd number. 10 Make the largest even number. 10 Unit 1: Number BRIGHT_SPARKS_2e_WB5_pr3.indd 10 06/07/ :30