Pupil s Book. Maths 4A. 3rd Edition IST RY O F E M IN AT I. Dr Fong Ho Kheong Gan Kee Soon Chelvi Ramakrishnan APP R. r 2. e f

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1 Pupil s Book Mths A rd Edition IST RY O F E APP R ON AT I OV E M IN UC r (M)MPHTBA_Imprint(IFC)&TP.indd 0 fo us 0 Dr Fong Ho Kheong Gn Kee Soon Chelvi Rmkrishnn BY D D e f rom 06 8//5 :5 AM

2 Prefce My Pls Are Here! Mths (rd Edition) is comprehensive, tsk-sed nd lerner-centred progrmme designed to provide pupils with solid foundtion in mthemtics nd opportunities to ecome efficient prolem solvers. My Pls Are Here! Mths (rd Edition) continues to mke lerning mthemtics fun nd rewrding through the use of engging illustrtions, photogrphs, hnds-on ctivities nd interctives tht help reinforce nd consolidte lerning for pupils of different ilities. For the Pupil: Guided Prctice Write in numerls nd in words. Numerls: 0 0 Write in figures nd in words Write in figures. ten thousnd, seven hundred nd thirty-two f ifty-two thousnd nd one hundred c eighty thousnd, four hundred nd one Write in words c Words: Figures: Words: Chllenge yourself to solve non-routine questions y pplying relevnt heuristics nd thinking skills in Put on Your Thinking Cp! NEW! Try prctising new concepts lernt with help from your techer in Guided Prctice! Put on Your Thinking Cp! Look t the grid nd nswer the following question. step F step L X H Ali ws t certin position. He wlked s descried nd ended up t position X. steps to the north, then steps to the west, then steps to the south, then step to the est, then step to the south, nd then steps to the west. Wht ws his strting position? An cute ngle is smller thn 90. PQR is n cute ngle. How mny cute ngles re there ltogether in the following figure? P Q R How mny right ngles does the hour hnd of clock move from G N J 8.m. tody to.m. tomorrow? Study the f igures drwn on the squre grid. Workook A: Put on Your Thinking Cp! pge 98 X Y Z Chpter Numers to Complete the numer pttern. Chpter 5 Angles 99 Complete the tle to show the properties ech f igure hs. Figure Property X Y Z It hs four sides. All of its sides re equl. Its opposite sides re equl. It hs exctly one pir of prllel sides. It hs exctly two pirs of prllel sides. All of its ngles re right ngles. Figure is rectngle ut not squre. Figure is not squre nd not rectngle. Figure is oth squre nd rectngle. Shre your thoughts with your techers, crete your own mthemtics questions nd ecome wre of your own mthemticl thinking in Mths Shring! Wht is less thn 8 8? Hnds-on Activity Work in pirs. 6 8? 8 8? Wht is less thn 0 8? Roll the to mke 5-digit numer smller thn Use 0 Your prtner uses 0 Show,, more thn or less thn 5-digit numer. to show the numer. to show his/her nswers to the following questions. more thn the numer less thn the numer c more thn the numer d less thn the numer e more thn the numer f less thn the numer Mths Shring Compre squres nd rectngles. Descrie rectngle nd squre using these words: perpendiculr, prllel nd ngles. List the similrities etween squre nd rectngle. Discuss how squre is relted to rectngle. Lesson Properties of Squres nd Rectngles NEW! Mster concepts lernt through engging nd interctive pplets in App-tivity! Wht is more thn 85? Switch roles. Repet nd. more thn 85 is 86. Lesson Numer Ptterns (M)MPHTBA_0.indd 7//5 : PM

3 For the Techer: NEW! 000 Numers to CHAPTER FIFA World Cup 0 Finls Venue Country Yer Brzil South Afric Germny Kore nd Jpn Frnce 998 Stdium Use scenrios pupils cn relte to in the chpter openers to cpture their interest, provide n engging introduction to the topics nd jump-strt lerning. Seting Cpcity 7 59 Mrcnã Soccer City Olympistdion 7 7 Nissn Stdium Stde de Frnce NEW! 8 8 Introduce concepts through context-sed tsks in Before you lern. At the end of ech tsk, question is posed to develop pupils cretive nd criticl thinking skills. um. pore Ntionl Stdi This is the Sing week. ded the mtch lst 850 people tten Lesson Rounding nd Estimtion Rounding to the nerest ten, Be hundred nd thousnd fore you l ern... Julie needed 96 cm of cloth for her project. Should she uy cm or 00 cm of cloth? Use to show how Julie should decide. P Whiteord (Numer Lines) 0 MOE CPDD ern on Less s Round to the nerest ten L te the How cn you estim of the seting cpcity nl Stdium? Singpore Ntio Big Ide Round to the nerest ten. Red, compre nd rding order numers cco es of to the plce vlu ding is their digits. Roun. used in estimtion Numers to 000 ring Numers Compring nd Orde Numer Ptterns tion Estim nd ding Roun is etween 0 nd 50. It is nerer to 0 thn to is 0 when rounded to the nerest ten. is pproximtely equl to //5 :5 PM stnds for pproximte ly equl to..indd 6 (M)MPHTBA_0 Crry out Hnds-on Activity to promote ctive nd collortive lerning. Where possile, pupils will complete sttion-sed ctivities in rotting groups to est utilise clss time. Hnds-on Activity Work in pirs. Sttion Compre numers. Show 900 nd 00 using 0 Exmple to your prtner. A moile phone weighs g. 57 is etween 50 nd 60. It is nerer to 60 thn to is 60 when rounded to the nerest ten grms The moile phone weighs 60 g when its mss is rounded to the nerest ten grms. Lesson Rounding nd Estimtio n (M)MPHTBA_0.indd 7//5 : PM Chpter Review Your prtner fills up numer line to com numer is greter pre the numers or smller. nd sys which Exmple Switch roles. Repe c NEW! Assess understnding when pupils pply concepts lernt in Review is smller thn is greter thn 900. Multiply t nd with these numers nd nd nd d nd Multiply. ing Numers e c Multiply f e c 0 Multiply. d Lesson Comp ring nd Order d d c f (M)MPHTBA_0.indd 7 5 7//5 : PM tiply. Estimte. Then, mul 75 5 c liction nd Chpter Multip Division of Whole d Numers 7//5 : PM 7 TBA_0.indd (M)MPH (M)MPHTBA_Prefce.indd 8/9/5 :9 PM

4 CONTENTS Numers to Lesson Numers to Lesson Compring nd Ordering Numers Lesson Numer Ptterns 9 Lesson Rounding nd Estimtion Fctors nd Multiples 6 Lesson Fctors 7 Lesson Multiples Multipliction nd Division of Whole Numers 8 Lesson Multiplying y -Digit Numer 9 Lesson Multiplying y -Digit Numer 55 Lesson Dividing y -Digit Numer 6

5 Whole Numers: Word Prolems 7 5 Angles 85 Lesson Solving Word Prolems Lesson Understnding nd Mesuring Angles Lesson Drwing Angles to 80 Lesson Turns nd 8-Point Compss 6 Squres nd Rectngles Lesson Properties of Squres nd Rectngles Lesson Drwing Squres nd Rectngles 7 Symmetry Lesson Symmetric Figures nd Lines of Symmetry Lesson Mking Symmetric Figures nd Ptterns (M)MPHTBA_Content.indd //5 : PM

6 CHAPTER Numers to 000 FIFA World Cup Finls Venue Yer Country Stdium Seting Cpcity 0 Brzil Mrcnã South Afric Soccer City Germny Olympistdion Kore nd Jpn Nissn Stdium Frnce Stde de Frnce 8 8 This is the Singpore Ntionl Stdium. 850 people ttended the mtch lst week. How cn you estimte the seting cpcity of the Singpore Ntionl Stdium? ns Lesso (M)MPHTBA_0.indd 6 Numers to 000 Compring nd Ordering Numers Numer Ptterns Rounding nd Estimtion Big I de Red, compre nd order numers ccording to the plce vlues of their digits. Rounding is used in estimtion. 8/7/5 :5 AM

7 Lesson Numers to 000 Reding nd writing 5-digit numers Before you lern... There re 8 5 ooks in lirry. Use 0 Lern Count in thousnds to count loud nd show the numer of ooks in the lirry. 0 thousnds 5 ten thousnd Count on:, 000, 000, 000, 5000, 6000, 7000, 8000, 9000, 000 Count in ten thousnds ten thousnds 5 hundred thousnd Count on: 000, 0 000, 0 000, 0 000, , , , , , 000 Count using fifteen thousnd, three hundred nd forty-two Lesson Numers to 000 7

8 Identify the plce vlue nd vlue of ech digit in 5-digit numer Ten Thousnds Thousnds Hundreds Tens Ones 9 8 stnds for ten thousnds stnds for thousnd stnds for hundreds 00 stnds for 9 tens 90 stnds for 8 ones The digit is in the ten thousnds plce. The vlue of the digit is The digit is in the thousnds plce. The vlue of the digit is. The digit is in the hundreds plce. The vlue of the digit is 00. The digit 9 is in the tens plce. The vlue of the digit 9 is 90. The digit 8 is in the ones plce. The vlue of the digit 8 is ( 000) ( ) ( ) (9 ) (8 ) 8 Chpter Numers to 000

9 Hnds-on Activity Sttion Show numers. Work in pirs. Us e 0 to show these numers to your prtner. Your prtner writes ech numer in numerls nd in words c 5 7 d 6 9 e 95 6 f 8 Exmple Write the vlue of the digit in ech of the numers. Sttion Sy the vlues. Show 5-digit numer using Exmple 5. Then, sy the vlue of ech digit. The digit 5 stnds for The digit stnds for. The digit stnds for 00. The digit stnds for 0. The digit stnds for. Repet with these numers c 6 0 d 90 5 Lesson Numers to 000 9

10 Guided Prctice Write in numerls nd in words. 0 Numerls: 0 Words: Write in figures nd in words. 0 0 Figures: Words: 0 Write in figures. ten thousnd, seven hundred nd thirty-two f ifty-two thousnd nd one hundred c eighty thousnd, four hundred nd one Write in words c Chpter Numers to 000