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P3 t1 math booklet

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بوكلت Math

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P3 t1 math booklet

  1. 1. 1 Name: ............................................................................................ Class: 3 /................... Primary Three First term Mathematics is where numbers fly like pigeons in and out of your head. ~Carl Sandburg
  2. 2. 2 Useful sites Place value http://www.mathbuddyonline.com/lessons/flash/PinkFrame705x460. php?frame=PinkFrame705x460&path=/lessons/math/numbers/introduction/level4/&fileLink=m4h5c1t1p6.html&sampleFlag=1 Extended form http://www.aaamath.com/g31d_px1.html#section2 Ten thousands http://www.hbschool.com/activity/elab2004/gr4/1.html Thousands http://www.toonuniversity.com/flash.asp?err=496&engine=9 Comparing numbers http://www.ezschool.com/Games/Compare.html
  3. 3. 3 Thousands 1) Read the following numbers ,then Put >, <,or = 4592 ……… 5136 5859 ……… 9434 8503 ……… 2766 6791 ……… 6491 5577 ……… 3090 8165 ……… 8615 2) Fill in the spaces as in the following example: The number The place The value 4 263 hundreds 200 6 789 3 518 3) Complete 1) 3 528 =3 000 + 500 + 20 + 8 2) 7 635 = ……… + ……… + ……… +……… 3) 4 903 = ……… + ……… + ……… 4) ………… = 7 000 + 90 + 2 5) ………… = 9 000 + 8 6) 0 + 0 + 9 = …………… I can do it... Yes!!!!!!! I can.....
  4. 4. 4 4) Complete using < , = or > a) 7 543 7453 b) 8458 854 c) 1111 999 d) 72 hundreds 756 tens e) 50 tens 5 hundreds f) 3 thousands 72 tens j) 35 hundreds 2 thousands 5) Complete the following table : Digits The smallest number The greatest number 2 , 7 , 1 , 8 7 , 0 , 5 , 4 6) Arrange each of the following in descending order: a) 6987 , 6978 , 6897 , 6798 , 987 The order is : ………… , ………… , ………… , ………… , ………… 7) Complete in the same pattern: a) 5736 , 5746 ,………… , …………., ………… , 5786,………… b) 7512, 7612,…………, …………,7912,…………,…………,8212
  5. 5. 5 8) Write the following numbers in letters ,(as in a) a) 5832 (Five thousand ,eight hundred and thirty two) b) 9843 (………………………………………………………………………………) c) 8600 (………………………………………………………………………………) d) 4008 (………………………………………………………………………………) 9) Answer the following questions. a) What is the smallest 4-digit number? …………… b) What is the greatest 4-different digit number? …………… c) What is the smallest 4-different digit number? …………… d) What is the greatest 4-different digit number and its unit digit is 7 ? …………… e) What is the smallest 4-different digit number and its unit digit is 1 ? …………… f) What is the smallest 4-different digit number and its unit digit is 2 ? ………… g) What is the smallest 4-different digit number and their sum is 12 ? ……………
  6. 6. 6 (Lesson 2) Ten Thousands 1) Fill in the spaces as in the following example: The number The place The value 74 263 Hundreds 200 28 76 5 35 180 60 521 2) Complete as the example a) 85347 = 85000 + 347 = 80000 + 5000 + 300 + 40 + 7 b) 79815 = ………… + ………… = ………… + ………… + ………… + ………… + ………… c) 70049 = ………… + ………… = ………… + ………… + ………… 3)Complete as in the examples: 34215 = 34000 + 215 36544 = 36000 + 544 a) 92641 = ………… + 641 b) 78410 = 78000 + ………… 4) Complete a) 80000 + 3000 + 600 + 20 + 9 = ………… b) 70000 + 8000 +40 +7 = ………… Make your mistakes work for you by learning from them. -- Donald Trump
  7. 7. 7 5) Complete in the same sequence: a) 76315 , 76325 , ………… , ………… , ………… b) 34421 , 34321 , ………… , ………… , ………… 6) Write the following numbers in digits as in the following example: ** Fifty four thousand, one hundred and thirty two ( 54132 ) a) Forty thousand , two hundred and seven ( ……………) b) Seventy two thousand and seven ( ……………) 7) Complete the table: Number Add 10 Add 100 Add 1000 Add 10000 54902 10943 8) Complete the table: Number Take away 10 Take away 100 Take away 1000 Take away 10000 54902 10943
  8. 8. 8 9) Complete using < , = or > 77543 97453 95107 9998 10000 9999 47598 9875 forty thousand ,six hundred and three 48029 45 thousand 540 hundred 10) Complete the following table : 11) Arrange the following in descending order: a) 69087 , 69778 , 68497 , 67398 , 9987 The order is : ………… , ………… , ………… , ………… , ………… b) 83102 , 53203 , 37045 , 82307 , 53023 The order is : ………… , ………… , ………… , ………… , ………… Don't worry about moving slowly, worry about standing still. -- Chinese proverb Digits The smallest number The greatest number 3 , 7 , 1 , 9 , 2 9 , 5 , 1 , 7, 0
  9. 9. 9 12) Answer the following questions: a) What is the greatest 5-digit number? ............ b) What is the greatest 5-different digit number? ………… c) What is the smallest 5-digit number ? ………… d) What is the smallest 5-different digit number? ………… e) Write a 5-digit number and its hundred digit is 7 ………… f) Write a 5-digit number whose tens digit is double its units digit. ………… g) What is the smallest 5-different digit number and its tens digit is 5? ………… h) What is the smallest 5-different digit number and its sum is 10 ? i) What is the greatest 5-different digit number and its sum is 35 ? ………… j) Underline the closest number to 50000 ( 49999 , 51111 , 50100 ) k) Underline the closest number to 99999 ( 10000 , 99990 , 10010 ) l) Underline the closest number to 30000 (30100 , 29990 , 31000 )
  10. 10. 10 Activity 1 1) Put the two digits 5 and 7 in the empty spaces in the number 2 8 3 so that the resulting number is: a) As great as possible ………… b) As small as possible ………… 2) Delete a digit from the number so that the result is: The number As great as possible As small as possible 35648 93726 3) Rearrange the digits of the number 9084 so that the result is : a) As close as possible to 1000 : ………… b) As close as possible to 10000 : ………… 4) Rearrange the digits of the number 3109 so that the result is : a) As close as possible to 1000 : ………… b) As close as possible to 10000 : ………… Important Notes
  11. 11. 11 A ) Place value : Take care of the difference between each of the following questions : 1) Asking for the place value of certain digit in a number. 2) Asking for the value of certain digit in a number. 3) Changing the form of the numbers . 4) Asking to extend the whole number relating to the value of each digit. 5) Asking to add the value of each digit with each other. (Opposite of number 4). 6) Writing the number in (a) letters or ( b ) numeral form 1) Asking for the place value of certain digit in a number. Example: Find the place value of underlined digit . a) 4678 Hundreds b) 75489..................................................... c) 23396.....................................................
  12. 12. 12 2) Asking for the value of certain digit in a number. Example: Find the value of underlined digit . a) 2389 80 b) 67430........................................ c) 8769 .......................................... d) 4360......................................... 3) Changing the form of the numbers . Substitute the letters with zeros ( 0) based on the next rule Units →x Tens → 0 Hundreds → 00 Thousands → 000 Ten Thousands → 0000 Example : Complete or compare. a) 78 hundred ...>.. 980 ( because 78 hundred = 7800) b) 230 tens =.......................... c) 3 ten thousand....................... 300 hundreds 4) Asking to extend the whole number relating to the value of each digit.Example :Complete 43678 = 40000 + 3000 + 600 + 70 + 8 a) 2896 =.................+....................+......................+................... b)56090=................+..................+................+...............+............
  13. 13. 13 5) Asking to add the value of each digit with each other. Example :Complete a) ..36270........= 30000+ 6000+ 200+ 70 + 8 b) ....................= 4000+ 50 c) ....................= 32000+ 30+2 6) Writing the number in : ( a ) letters or ( b ) numeral form Example a) writing the following numbers in letters: 34879 Thirty four thousand, eight hundred and seventy-nine 45672............................................................................................ .................. b) Write the following numbers in numerals form : Thirty one thousand, three hundred and fourteen.....31314........... Twenty thousand, three hundred and seventy five..........................
  14. 14. 14 B – Complete in the same sequence 1) Observe which digit is changed ( Tth , Th , H , T or u ) 2) Find by how much it is changed and decide either it is increased or decreased. 3) Work on this digit only but take care in the following cases: *If we want to decrease the 0 by 1 change it to 9 and decrease the digit before it by 1. *If we want to increase the 9 by 1 change it to 0 and increase the digit before it by 1. Example : Complete in the same sequence: *(Take care tens digit decrease by 1,whole 10. ) A) 12915 , 12905 , 12895 , 12885 *(Take care hundreds digit increase by 1, whole 100. ) b) 34865 , 34965 , 35065 , 35165 c) 17654 , 18654 , ..................... , ..................... d) 3488 , 3489 , ……………. , …………… e) 4568 , 5568 , …………… , …………..
  15. 15. 15 Addition Useful sites:  Normal addition http://www.free-training-tutorial.com/addition/addition-washington-monument.html http://www.free-training-tutorial.com/addition/addition-dragons.html  Adding 3 numbers story problems: http://www.bbc.co.uk/skillswise/numbers/wholenumbers/addsubtract/mental/flash6.shtml http://www.bbc.co.uk/skillswise/numbers/wholenumbers/addsubtract/mental/flash5.shtml
  16. 16. 16 Unit 2 (Lessons 1 & 2) The Meaning of Addition & Finding the Sum 1) Mina has LE 3257 and Karim has LE 4521 What is the total amount of money owned by them? The total = ………………………………………………………… 2) A man bought a house for LE 75643 and bought a car for LE 21046, How much did he pay ? He paid ………………………………………………………… 3) An elephant weighs 3246 kg. and its baby weighs 1035 kg, What is the weight of them together ? The total weight ………………………………………………………… 4) Add: 96678 + 3584 73372 + 7717 90094 + 8821 7) Add: a) 25461 + 34527 = …………………… b) 27590 + 34515 + 34510 = …………………… c) 98879 + 7054 + 669 = ……………………..
  17. 17. 17 (Lessons 3 & 4) Adding by renaming & Mental Math 1) Find the result of each of the following mentally: 1) 3258 + 1000 = …………………… 2) 64379 + 600 = …………………… 3) 76548 + 2000 = …………………… 4) 45317 + 60 = …………………… 5) 54000 + 317 = …………………… 6) 48000 + 792 = …………………… 7) 586 + 99 =……… 8) 586+ 101 =……… 9) 54796 + 199 =……… 13) 36514 + 9999 =……… Always walk through life as if you have something new to learn and you will. ~Vernon Howard
  18. 18. 18 2) Find the result of each of the following mentally using the equality 12536 + 4916 = 17452 a) 12536 + 5916 = ……………………………… b) 12536 + 3916 = ……………………………… c) 12536 + 4816 = ……………………………… d) 12536 + 4926 = ……………………………… e) 13536 + 4916 = ……………………………… f) 12436 + 4916 = ……………………………… g) 12636 + 4916 = ……………………………… (Lesson 5) Characteristic of Addition 1) Notice and complete: 2 + 7 = 7 + 2 commutative property 36 + 64 = 64 + 36 2156 + 4630 = 4630 + 2156 7314 + 2351 = 2351 + ………… ……… + 5723 = 5723 + 98321 6175 + ………… = 8513 + 6175 ( 2 + 3 ) + 4 = 2 + ( 3 + 4 ) associative property ( 25 + 75 ) + 37 = 25 + ( 75 + 37 ) ( 6452 + 3056 ) + ……… = 6452 + (……… + 4216 )
  19. 19. 19 2) If 64537 + 17549 = 82086 & 4897 + 5103 = 10000 , Then find directly the result of each of the following : a)17549 + 64537 =…………… b)5103 + 4897 =…………… c)17549 + 4897 + 5103 =…………… d)64537 + 4897 + 5103 =…………… e)64537 + 17549 + 4897 + 5103 =…………… 3) If 73462 + 8517 = 81979 & 2988 + 7012 = 10000 Then find directly the result of each of the following : a)8517+73462 =…………… b)7012+2988 =…………… c)73462+2988+7012 =……………
  20. 20. 20 4) Find the sum (mentally) a) 99 + 450 + 1 =…………… b) 998 + 865 + 2 =…………… c) 6000 + 86547 + 4000 =…………… d) 9999 + 13245 + 1 =…………… 5) Complete using suitable numbers a) 1234 + 4579 > 1234 + ……… b) 56730 + ……… < 80000 c) ………… + 10000 > 1000 + 8796 d) 6543 + 9876 = 9876 + ………… e) 19999 + ………… < 20000+ 199 6)Complete using one of the signs <,= and> (mentally) a) 5342 + 2658 90000 b) 5437 + 345 5417 + 365 c) 739 + 10451 1739 + 10000 The greatest mistake you can make in life is to be continually fearing you will make one. -- Elbert Hubbard
  21. 21. 21 7) Arrange the following sets of numbers: 76542 , 67245 , 32590 , 76452 , 67935 Ascending order : ……… , ……… , ……… , ……… , ……… Descending order: ……… , ………. , ……… , ……… , ……… The greatest number is : ……… The smallest number is : ……… The sum of the greatest and the smallest Numbers = ……… + ……… = ……… 8) complete in the same sequence: a) 7654 , 7754 , ……… , ……… , ……… , ……… b) 8765 , 8665 , ……… , ……… , ……… , ……… I'll never reach my destination, If I never try, So I will sail my vessel, till the river runs dry. -- Garth Brooks
  22. 22. 22 9) Story Problems: 1) The number of the visitors to Luxor City last Thursday was 4897 and last Friday was 5302 find the number of the visitors in the two days ? The number of the visitors = ……… + ……… = ……… 2) A governorate built 35627 flats for the limited income people in one year. The next year, it built another 22543 flats ,Find the total number of flats built during the two years. The total number of flats = ……… + ……… = ……… 3) The donations of hospital in three consecutive weeks were LE 39824, LE 54350 and LE 43925 Calculate the total of donations in the three weeks. The total donations = ……… + ……… = ……… 4) Nadia bought a T.V set for LE 1500 and a washing machine for LE 2763, How much money did Nadia pay? She paid = ……… + ……… = ………
  23. 23. 23 Unit 2 :Activity 1) Complete in the same pattern: a) 11 , 33, 55, …… , …… , …… , …… b) 2002 ,3003 ,4004 ,……… , ……… , ……… , ……… c) 1221 , 2222, 3223 , ……… ,……… , ……… , ……… 2) Write the greatest and the smallest 4-digit symmetrical numbers. The greatest number is ………… The smallest number is ………… 3) Write four symmetrical numbers so that the units digit is double the tens digit. The numbers are ……… , ……… , ……… , ……… 4) Write three symmetrical numbers so that the tens digit is 3-times the units digit. The numbers are ……… , ……… , …… 5) How many symmetrical numbers are formed from 2 digits? …… ,……, ……, ……, ……, ……, …… , …… , …… 6) Put the two digits 6 and 8 in the empty places in the two numbers 34 49 and 4 937 so that their sum is as small as possible and find that sum. The two numbers are ……… and ……… Their sum is ………
  24. 24. 24 Subtraction Normal subtraction: http://www.ictgames.com/countonconvict.html Difficult http://www.bbc.co.uk/schools/ks2bitesize/maths/number/addition_subtraction/play.shtml Story problems: http://www.bbc.co.uk/skillswise/numbers/wholenumbers/addsubtract/mental/flash7.shtml Money: http://www.bbc.co.uk/skillswise/numbers/wholenumbers/addsubtract/mental/flash2.shtml Mental math illustration: http://www.bbc.co.uk/schools/numbertime/addem/cowboys.shtml
  25. 25. 25 Unit 3 (Lessons 1 & 2) The Meaning of subtraction Subtracting Two Numbers 1) In a primary school of 643 pupils, the number of boys is 360 . The number of girls =………… _ ………… = …………… 2) Sami bought a house for LE 80000 .He resold it for LE 90500 ,How much money did he profit ? His Profit = ……………………………………………………………… 3) Ahmed has LE 45000 ,he bought a car for LE 31150 What is the remainder with Ahmed? The remainder = ……………………………………………………………… 4) A football stadium's income is LE 4362 from tickets sales on Saturday. The week before ,its income was LE 3567 How much was the income in the two weeks? The income was ………………………………………………………………… 5) 4763 people started a marathon race. 187 people did not finish. How many people finished the race? The number = ……………………………………………………………
  26. 26. 26 (Lesson 3) Subtracting by Renaming 1) Find The Result: d) 29354 - 1201 e) 9814 - 6557 f) 8831 - 3102 g) 8681 + 2579 h) 4760 -374 i) 4141 -3353 2) What is the increase of 6549 than 2356? The increase is ………… _ ............ = ………… 3) Find the decrease of 3245 than 7620? The decrease is ………… _ ............. =……………. 4) Find the difference between 8567 and 3214 ? The difference is …………… _ .............. =…………… 5) Complete in same pattern: a) 8365 , 8355 , ………… , ………… , ………… , 8315 b) 75418 , 74418 ,…………… , 72418 , …………… , …………… c) 93754 , …………… , 93554 , …………… , 93354 , …………… Work hard. Someone's always watching. -- Donald Trump
  27. 27. 27 (Lesson 4) The Relation Between Addition & Subtraction 1) Complete: + - = 2) Complete the following : Look carefully at these questions, then follow the pattern? a) 7658 + 1000 = 8658 then 8658 - 1000 = 7658 b) 2500 + 3740 = 5000 then ……… - ……… = ……… e) 5190 + 2063 = ……… then ……… - ……… = ……… f) 10000 + 7450 = 17450 then ……… - ……… = ……… The only person who is educated Is the one has learned how to Learn and change. Carl Rogers and Jerome Freiberg 5731 8452 ………………… …………………
  28. 28. 28 3) Arrange the following numbers 3426, 3246 ,2346 and 4326 , then complete: The ascending order : ………… , ………… , ………… , ………… The descending order : ………… , ………… , ………… , ………… The greatest number : ………… The smallest number : ………… The difference = ………… _ ………… = ………… 4) find the missing number : 67975 +…………… 95646 ………… + 69879 78071 51031 - ………… 9856 ………… - 84026 5674 57770 +…………… 76104 95144 -…………… 35271
  29. 29. 29 Mental Arithmetic. If a – b = c If a↑ increase , c ↑ increase A and C are Friends a ↓ decrease , c ↓ decrease But if b ↑ increase , c↓ decrease A and C are Enemies b ↓ decrease , c ↑ increase Examples: If you know that 20 - 6= 14, find out the result of each of the following directly without performing the usual subtraction operation: (a) 19 – 6 = ............ (b) 21 – 6 = ............... (c) 20 – 5 = ................ (d) 20 – 7 = ................. (e) 20 – 14 = ................ (f) 18 – 6 = ................. (g) 20 – 4 = ...................
  30. 30. 30 (Lesson 5) Mental arithmetic 1) Underline the correct answer: a) 5784 - …………… = 5384 ( 40 , 400 , 4000 ) b) 7845 - …………… = 7815 ( 300 , 3000 , 30 ) c) 45982 - …………… = 43982 ( 200 , 2000 , 20 ) d) 66766 - …………… = 61766 ( 5000 , 50 , 500 ) e) 4375 - …………… = 2375 ( 2 , 200 , 2000 ) f) 37859- 5000 =…………… (37809 , 32589, 37359) g) …………… - 400 =37255 (77255 , 37295 ,37655) 2) Complete using 101 , 1001 , 10001 as in the following example: * 58426 - = 57425 a) 96584 - = 96483 b) 4721 - = 3720 c) 47315 - = 46314 d) 81524 - = 81423 e) 65318 - = 55317 1001 …………… …………… …………… …………… …………… You have not lived a perfect day, unless you've done something for someone who will never be able to repay you. -- Ruth Smeltzer
  31. 31. 31 Al Karma Language School Games on shapes: http://www.primaryresources.co.uk/online/longshape3d.html http://www.bgfl.org/bgfl/custom/resources_ftp/client_ftp/ks2/maths/3d/index.htm http://www.interactivestuff.org/match/maker.phtml?featured=1&id=15 Illustrate the prism: http://www.bgfl.org/bgfl/custom/resources_ftp/client_ftp/ks2/maths/3d/index.htm Angles: http://www.bbc.co.uk/schools/ks2bitesize/maths/activities/angles.swf http://www.innovationslearning.co.uk/subjects/maths/activities/year6/angles/game.asp
  32. 32. 32 Unit 4 (Lesson 1) **Solid Geometric figures** The Name The solid figure Number of faces Number of edges (sides) Number of vertices Cube 6 (Each is a square) 12 8 Cuboid 6 (each is a square or a rectangle) 12 8 Triangular Prism 3 Faces & 2 Bases 9 6 Rectangulr Prism 4 Faces & 2 Bases 12 8 Squared Pyramid 4 Faces & 1 Base 8 5
  33. 33. 33 Prism Triangular Pyramid 3 Faces & 1 Base 6 4 Cone 1 Base 0 1 Cylinder 2 Bases 0 0 The root word is the Greek prizma which relates to cutting or sawing.
  34. 34. 34 1) Complete the following : a) The cube has ……… faces , each face is a ……… b) The triangular pyramid has ……… faces, ……… base , ……… edges , ……… vertices c) The rectangular prism has ……… faces, ……… base , ……… edges , ……… vertices d) The cuboid has ……… faces, ……… edges ,……… vertices e) Each face of the cuboid is ………… or …………… f) The cone has ……… base , ……… vertices g) The triangular prism ………faces, ……… base , ……… edges , ……… vertices. h) The squared pyramid ……… faces,……… base, ……… edges, ………vertices. I) The ……… and the …………have the same number of faces , and edges. Anyone who stops learning is old , whether at twenty or eighty. Henry Ford
  35. 35. 35 2) Complete the table below: The Name The solid figure Number of faces Number of edges (sides) Number of vertices ………… 6 (Each is a …………) ………… ………… ………… ………… ………… 8 ………… 3 Faces & 2 Bases ………… 6 ………… Pyramid ………… ………… 5 ………… Pyramid 3 Faces & 1 Base 6 …………
  36. 36. 36 Lesson 2 Measuring the length of a line segment First: The line segment, The ray & The straight line 1) Name each figure using letters and symbols. 1. ……………………….. …………………….. ……………………….. ……………………. 2) Use your ruler to measure the length of the following line segments , then complete the table: F E B A L P M O EF AB OP LM Line segment ……… cm ……… cm ……… cm ……… cm Length
  37. 37. 37 Geometric operations First: Drawing a line segment : 1) Draw a line segment of the following lengths: a) 7 Cm b) 5 Cm c) 4.5 Cm ( 1 4 2 Cm) d) 6.5 Cm ( 1 6 2 Cm) Second: drawing a squares , rectangles on a lattice. 2) In the lattice, draw each of the following: a) A rectangle of dimensions (length is 6 units , width is 4 units). b) A square of side length 5 cm.
  38. 38. 38 c) A rectangle of dimensions (length is 7 units , the width is 3 units). d) A square of side length 3 cm.
  39. 39. 39 Third: Drawing Congruent shapes: 1) A shape is missing from the square,Pick the congruent shape that completes the square. 1) 2) 2) Draw a congruent figure to each of the following:
  40. 40. 40
  41. 41. 41 The Visual Patterns 1) Choose ,then complete the pattern. 1. ? 2. ? 3. ? 2) Choose the picture that comes next: 1. ? 2. ?
  42. 42. 42 3) Select the shape that comes next in the pattern. 5) Draw the missing shapes to complete the pattern. 6) Draw the missing shape to complete the pattern. 7) Draw the missing shapes to complete the pattern. 9) Select the shape that comes next in the pattern.
  43. 43. 43 Lesson 6 (The Angles) What is an Angle? Two rays that share the same endpoint form an angle. The point where the rays intersect is called the vertex of the angle. The two rays are called the sides of the angle. Example: Here are some examples of angles. We can specify an angle by using a point on each ray and the vertex. The angle below may be specified as angle ABC or as angle CBA; you may also see this written as ABC or as CBA. Note how the vertex point is always given in the middle.
  44. 44. 44 Degrees: Measuring Angles We measure the size of an angle using degrees. Example: Here are some examples of angles and their degree measurements. Acute Angles An acute angle is an angle measuring between 0 and 90 degrees. Example: The following angles are all acute angles.
  45. 45. 45 Obtuse Angles An obtuse angle is an angle measuring between 90 and 180 degrees. Example: The following angles are all obtuse. Right Angles A right angle is an angle measuring 90 degrees. Two lines or line segments that meet at a right angle are said to be perpendicular. Note that any two right angles are supplementary angles (a right angle is its own angle supplement). Example:The following angles are both right angles.
  46. 46. 46 1) Color the boxes next to the angles ,Acute angles black and the obtuse blue. 2) Circle the smallest angle
  47. 47. 47 3) Write the type of each angle as acute, obtuse, straight, or right. a) b) c) d) e) f) i) g) h)
  48. 48. 48 Measuring angles Use a protractor to measure these angles and say its type whether they are acute, obtuse or right angles. This angle measures …………º It is an ………… angle. This angle measures …………º It is an ………… angle. This angle measures …………º It is an ………… angle. This angle measures …………º It is an ………… angle.. This angle measures …………º It is an ………… angle. This angle measures …………º It is an ………… angle.
  49. 49. 49 Drawing an angle of a known Measure Draw the angles of the following measures ,write the type a) 90 b) 35 c) 75 d) 180 e) 45 f) 110
  50. 50. 50 * Complete the table as in a): The shape Name of the angle The Vertex The two sides a) A B C < ABC B  BA ,  BC b) X Y Z ……………… ……… ………,……… c) O P Q ……………… ……… ………,……… d) K C F ……………… ……… ………,……… e) L S M ……………… ……… ………,………
  51. 51. 51 **Remember that: a) The unit of measuring angles is a degree (…º) b) Small angles (less than 90º) are called ACUTE angles ( Its type is an acute angle ) c) Angles bigger than (90º, but less than 180º are called OBTUSE angles. ( Its type is an obtuse angle ) d) The measure of the straight angle = 180º e) The measure of the rigth angle = 90º ( Its type is a Right angle ) "Don't be the one you see but be the one you want to be."

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