We use metres to measure length. There are 100 centimetres in a metre. a 6 m = cm b 3 m = cm c 9 m = cm

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1 Units of length metres We use metres to mesure length. There re 00 entimetres in metre. 00 m = m Convert these metres to entimetres: 6 m = m 3 m = m 9 m = m Estimte nd then mesure the length nd width of these ojets: Answers will vry. Ojet Estimte in metres in metres lssroom whiteord desk length m m width m m length m m width m m length m m width m m 3 Find out how tll eh niml is to the nerest metre: 4 6 m 3 m m D

2 Units of length entimetres We use entimetres to mesure smller units of length. There re 00 entimetres in metre. 00 m = m m Reord the lengths shown on this ruler in eh ox:.5 m 6 m 3 m 0 m Use ruler to drw the following lines. Strt t the dot. 7 m 8 m m d 3 m 3 Mesure these prts of your ody with piee of string. Ly the string eside metre ruler to work out the orret mesurement for eh. m m m d Answers will vry. Teher hek. e f m m m D

3 Units of length metres nd entimetres Often we will use oth metres nd entimetres when mesuring length. This length of rion is 46 m. This is metre nd 46 entimetres. Write these lengths in entimetres: m 38 m 38 m m 67 m 67 m m 8 m 8 m d 5 m 45 m 545 m e 4 m 59 m 459 m f m 90 m 90 m Write these lengths s metres nd entimetres: 7 m m 7 m 46 m 4 m 6 m e 835 m 8 m 35 m 39 m 3 m 9 m d 3 m m 3 m f 94 m m 94 m 3 Work out the missing lengths tht mke up eh metre: 00 m 40 m 50 m 0 m 00 m 0 m 35 m 45 m 4 Fill in the gps using m or m : Hssn is 3 m tll. Ntsh only lives 79 m shool. from The house is 5 m tller thn the r. d Leng mesured her wist size nd it ws 64 m. D 3

4 Units of length millimetres When we need unit of length tht is smller thn entimetre, we use millimetres. There re 0 millimetres in entimetre. 0 mm = m 0 mm 0 3 Estimte nd mesure these ojets in millimetres: Ojet Estimte Millimetres Width of your thum Length of your hnd Length of ornflke Answers will vry. Teher hek. How mny millimetres in: 4 m = 40 mm 9 m = 90 mm m = 0 mm 3 Write these mesurements in entimetres: 40 mm = 4 m 70 mm = 7 m 30 mm = 3 m 4 Reord the length of eh piee of string in millimetres: mm mm mm d mm 4 D

5 Units of length millimetres 5 Mesure the height of eh mini-mthlete in millimetres: d Height 38 mm Height 40 mm Height 45 mm Height 36 mm 6 Write these lengths in millimetres: m 5 mm = 5 mm 5 m 7 mm = 57 mm 4 m 8 mm = 48 mm d m 9 mm = 9 mm e 8 m 3 mm = 83 mm f m 4 mm = 4 mm 7 Write these lengths s entimetres nd millimetres. The first one hs een done for you. 63 mm = 6 m 3 mm 84 mm = 8 m 4 mm 7 mm = e 53 mm = m 7 mm d 9 mm = m 9 mm 5 m 3 mm f 36 mm = 3 m 6 mm 8 Mesure these prts of the piture in millimetres: Height of the door Width of the house Height of the fene d Width of the grge door mm mm mm mm D 5

6 Units of length perimeter The perimeter is the totl length round the outside of n enlosed spe. To find the perimeter of this shpe, we dd the lengths of ll the sides. 7 m m m P = = 8 m 7 m Find the perimeters of these shpes. 3 m 6 m 3 m m P = P = = 4 m = m Mesure these shpes nd find the perimeter. m m m m P = = 0 m m 4 m m m P = m = m 6 D

7 Units of length length nd deiml nottion We n use deiml nottion to reord lengths. This flg pole is 36 entimetres tll nd n e written s 3 metres nd 6 entimetres or 3.6 metres in deiml nottion. 3.6 m Mth the following mesurements. The first one hs een done for you. m 65 m m 67 m m 69 m 9 m 87 m m 6 m 67 m 987 m 6 m 69 m 65 m 9.87 m.6 m.65 m.69 m.67 m Reord the totl length of oth lines in eh question in deiml nottion: 0 m m 0 m m 0 m m D 7

8 Units of length length nd deiml nottion 3 In this tivity, you re going to mke pper eroplne to fly nd mrk the distne it hs flown. You will need one sheet of A4 pper, ll of string nd metre ruler. Fold the sheet of A4 pper in hlf lengthwise. Crese the folded end. Unfold the pper nd ly it on flt surfe. Fold the right top orner to the entre line. Crese the digonl fold. Repet for the left top orner. 3 Fold the new right top orner to the entre line. Crese the folded end. Repet for the new left top orner. 4 Turn the eroplne over nd fold the sheet lengthwise, inwrd, long the entre line. Crese the folded end. 5 Fold the top flp down so tht its front touhes the ottom of the plne. Crese the folded end. 6 Turn the pper over, fold nd rese the other flp s you did in step 5. 7 Lift the flps to rete the wings. Now tht you hve mde pper eroplne, work in smll group to see who n throw their plne the furthest. Every time one of your group flies their eroplne, ple the string from the strting position to where it lnds. Cut the string to the ext mesurement nd ple it next to metre ruler to work out the distne. Reord your distnes in the tle elow: Nme Distne in entimetres Distne in metres Whose eroplne went the furthest? Teher hek. 8 D

9 Connet nd lok pply Getting redy This is gme for plyers. Plyers need different oloured penil eh nd opy of this pge. You my wish to mke extr opies to ply gin. opy Wht to do The ojet of this gme is to e the plyer with the longest totl of ll their lines. Plyer onnets the lk dots vertilly. Plyer onnets the white dots horizontlly. Neither plyer n go digonlly. Plyers my only onnet dots t time. Lines n t ross over. You n lok your opponent y onneting dots in front of their line. Look t the exmple to the left. When the grid is full, eh plyer totls ll their lengths. The length etween dots is m. This might vry due to printer settings, ut use the length of m for this gme. D 9

10 Are squre entimetres An re is the mount of surfe on shpe or ojet. Smll res re mesured in squre entimetres. We write this s m for short. m m Clulte the re of eh of the following shpes y ounting the squre entimetres.* 3 m 5 m 9 m d e f m 6 m 6 m g h 0 m m *Not drwn to sle. Using the grid pper elow, rete 4 different shpes tht hve n re of 6 m.* Answers will vry. *Not drwn to sle. 0 D

11 Are squre entimetres 3 Count the squre entimetres tht eh shpe is mde up of. Are = 4 m Are = 5 m Are = 9 m 4 Mesure the re of your hnd on the grid elow y ounting how mny squres it tkes up. Is it esier to mesure with your fingers strethed out or together? Answers will vry. Teher hek. My hnd is squre entimetres. D

12 Are squre metres When we need to find the res of lrge spes we use squre metres. The symol for squre metres is m. In groups, stik piees of newspper together to mke squre tht is metre long nd metre wide. How mny hildren n fit inside squre metre? Answers will vry. 3 Rewrite these mesurements using the short form: 7 squre metres = 7 m 3 squre metres = 3 m 0 squre metres = 0 m d squre metres = m e 9 squre metres = 9 m f squre metres = m Whih unit of mesurement (m or m) would you use to find the re of: moile phone 4 = m soer pith = m n A4 piee of pper = m d your ed = m e ditionry m f the top of shoe ox = m = Mesure the items in the tle elow nd ple tik in the olumn tht mthes: The re of: Less thn m² Are out m² the lssroom door the lendr the whiteord d the omputer sreen D More thn m²

13 Are hllenges pply Wht to do Solve these re hllenges sed on the dimensions on eh shpe. Look t this retngle. It hs een divided into 3 equl setions. 3 m m Work out the re of the shded setion. 3 = = Now work out the re of the unshded setions. m 4 m 4 = = 4 This squre* hs 4 pinted white. Wht is the re of the grey setion? Show your working. First work out the re of the squre: 8 m 8 8 = 64 m *Not drwn to sle. Beuse the white squre is of the 4 grey, we know tht side of the white is 4 m. So the re of the white squre is: 4 4 = 6 m Now we sutrt the white re from the totl re to get the grey re: 64 m 6 m = 48 m D 3

14 Tngrm res solve Getting redy For these prolems, you will need opy of this pge. Cut out the set of 7 tngrm piees elow. Colour eh piee so tht: squre: yellow smll tringles: red medium tringle: lue lrge tringles: green prllelogrm: ornge opy Wht to do For eh prolem on pge 5, work out the re of the squre mde up from tngrm piees. Your only lue is tht the yellow squre is squre unit. Stik your piees together on piee of pper. 4 D

15 Tngrm res solve Wht to do Prolem Mke squre with the lue tringle nd the red tringles. Wht is the re of this new squre? squre units lue How do you know? red red The red tringles together mke squre the sme size s the yellow squre. So, the re of red tringles is squre unit. The lue tringle is the sme s red tringles whih mens the re of the squre is squre units. Prolem Mke nother squre, this time using ll 7 tngrm piees. green ornge Wht is the re of this new squre? 8 squre units green red yellow red lue How do you know? The red tringles together mke squre tht is equl in size to the yellow squre so we know tht red tringles is squre unit. We lredy know tht the yellow squre is squre unit. The lue tringle is lso equl to red tringles so it is squre unit. The prllelogrm is the sme s red tringles so it is squre unit. The totl of this hlf of the squre is 4 squre units so the totl re is 8 squre units. D 5

16 Volume nd pity litres Cpity refers to how muh liquid ontiner n hold. Cpity n e mesured in litres. We use the symol L. Next time you go to the supermrket, look out for ll the different items tht hve L for litres on the lel. For exmple, milk rtons re often sold in litres. Here is seletion of ontiners. Work out how mny times eh ontiner n e filled from litre rton, suh s milk rton. d Answers will vry. e f g h Use litre rton to estimte nd mesure the pity of these ontiners in litres. wste in suepn wtering n d uket Continer Estimte How mny litres? Answers will vry. 6 D 3

17 Volume nd pity millilitres To mesure the pity of smller ontiners we use millilitres. The symol for millilitres is ml. There re 000 ml in litre. This litre jug is filled hlf wy so it ontins 500 ml of liquid How mny of eh ontiner is needed to fill litre jug? Continer size mug 50 ml glss 00 ml egg up 50 ml d rindrop ml Numer needed to fill litre jug Order these ontiners from smllest to lrgest ording to their pity. d e Continer Order d e 3 Wht is the most pproprite unit of pity for eh of these ojets millilitres (ml) or litres (L)? ml L L d ml e ml f ml or L D 3 7

18 Volume nd pity millilitres 4 Lel eh of these ontiners with the mount of wter in eh: d ml 500 ml 800 ml 00 ml 5 Answer the questions sed on the mount of wter in the ontiners ove. Whih ontiner hs the most liquid in it? Whih ontiner hs the lest liquid in it? How muh more liquid is there in ontiner thn in ontiner? d 600 ml d Whih three ontiners, when dded together, would not overflow?,, 6 Mrk the level of liquid in these jugs ording to eh prolem. Be pours herself glss of ornge juie from this jug tht ws full to the litre mrk. If the glss she uses is 300 ml, how muh is left in the jug? 700 ml Cm is mixing ordil for prty. He pours in 00 ml of ordil nd then dds twie s muh wter. How muh mixed ordil is now in the jug? 600 ml 8 D 3

19 Volume nd pity mesuring volume with ui entimetres Volume is the mount of spe tht n ojet tkes up. To mesure volume we use ui entimetres. One ui entimetre is m long, m wide nd m high. The symol we use for ui m is m 3. m m m = m 3 Use entiues or se 0 ones to rete the following models. Then ount the numer of ues to work out the volume of eh model. 3 ui entimetres 7 ui entimetres 8 ui entimetres d 0 ui entimetres e 3 ui entimetres f 9 ui entimetres For this next tsk, you will need 7 ues. Use ll 7 ues to mke model tht is 3 ues long nd 3 ues wide. Wht is the volume of model tht is 4 ues long, ues wide nd ues high? 6 ui entimetres D 3 9

20 Counting ues investigte Getting redy You n use ues to help with these prolems. Wht to do How mny more ues re needed to mke eh model totl volume of 64 ui entimetres? 54 more ues 48 more ues How mny more ues re needed to mke eh model totl volume of 7 ui entimetres? 6 more ues 9 more ues 3 How mny more ues re needed to mke eh model totl volume of 5 ui entimetres? 05 more ues 5 more ues 0 D 3

21 Mss kilogrms When we mesure how hevy something is, we re looking t the mss of n ojet. We mesure mss in kilogrms. We sy kilo for short nd write it s kg. Flour is something tht is sometimes sold in kg gs. This sle is one tht most people use when they re ooking. You might hve one in your kithen t home. Use set of lning sles to test the mss of the following items. Ring the items tht weigh less thn kg nd underline the items tht weigh more thn kg. d e f For this next tsk, you will need lss set of exerise ooks tht re ll the sme. Work with prtner to estimte how mny ooks re needed to lne kg. In the tle elow, reord your tem s guess, then sk two other tems nd reord their guesses. 3 Tem nmes Numer of ooks More or less thn kg After you hve found out the numer of ooks tht will lne or get the losest to kg, write more or less next to eh guess. Who ws the losest? D 4

22 Mss kilogrms 3 How muh less thn kg re the following weights? 500 g d 50 g 500 g 750 g 50 g 600 g 400 g 850 g e 50 g 750 g f 400 g 600 g 4 Ring the 3 weights tht omine to give mss of kg: 300 g 400 g 00 g 500 g = kg 00 g 50 g 600 g 00 g = kg 0 g 480 g 550 g 300 g = kg 5 When we uy fruit nd vegetles, we usully py y the kilogrm. Cn you think why this is? Answers will vry. 6 Serh through some supermrket tlogues nd find out the ost of these items per kilogrm: d per kg per kg per kg per kg 7 Bsed on the prie per kilogrm in question 6, work out the totl ost of my shopping if I ought the following: kg of pples = Answers will vry. Use lultor. Write the sutotl next to eh item. kg of rrots = 3 kg of ornges = Answers will vry. Totl ost = D 4

23 Mss grms We use grms to mesure items tht re less thn kilogrm. We use g for grms. kilogrm = 000 grms kilogrm = 500 grms Write eh mss in grms: seventy five grms 75 g eighty two grms 8 g five hundred grms 500 g d one thousnd grms 000 g e Ring the mount tht is the sme s kilogrm. f Underline the mount tht is the sme s hlf kilogrm. Whih unit of mss would you use for eh item kilogrm (kg) or grm (g)? d g kg g kg 3 Estimte then mesure the mss of eh item: Answers will vry. M I A Estimte Mesure Estimte Mesure Estimte Mesure 4 Find items round your lssroom tht fit into eh tegory. Try nd get them s lose s possile to the mss in eh olumn. Answers will vry. Item Aout 00 g Aout 00 g More thn kg D 4 3

24 Mss grms 5 Use supermrket tlogues to find out the mss of these items: Answers will vry. 6 If the length of this line represents kg nd the mrker in the middle is 500 g, where would these items go? Drw line to onnet them to the right ple: 0 kg 500 g kg 750 g 5 g 7 Deide whether the omined mss of the items pitured ove weighs more or less thn kg. ked ens nd nns tu of yoghurt nd n egg nns nd the yoghurt d egg nd nns more or less more or less more or less more or less 8 Write the mss of eh type of fruit: 350 g 50 g 4 D 4

25 Mystery mss solve Wht to do Find the mss of eh of these items. 50 g 50 g 00 g 00 g = 300 g 50 g 00 g 00 g 00 g 500 g = 750 g 500 g 500 g 50 g 000 g = 750 g D 4 5

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