POWERPOINT PRESENTATION IN MATHEMATICS GRADE 4
- 1. MATH 4
- 3. Game on Giant Step. Use flashcards of addition, subtraction, multiplication, and division. Activity
- 5. Look at the following operations below. Have you encountered equations like these? Observe the example below and do the different tasks after you understand this lesson. 2 x 3 + 20 24 ÷ 2 + 13 - 16
- 6. To solve the equation, we will use the MDAS Rule. MDAS refers to the basic operations such as Multiplication, Division, Addition and Subtraction. The rules must be followed to solve the equation like these.
- 7. Rule 1: Multiply or divide first in the order as they come from the left to right. 2 x 3 + 20 6 + 20 26
- 8. 24 ÷ 2 + 13 - 16 12 + 13 - 16 25 - 16 9 Rule 2: Add or subtract in order as they come from left to right.
- 9. Activity 1 Solve the following equations. Show your solutions and encircle the final answer. 1. 9 x 3 – 16 ÷ 4 2. 10 – 6 + 4 3. 18 ÷ 3 x 4 – 6 + 9 4. 60 + 48 ÷ 2 x 4 5. 30 ÷ 2 x 4 – 8 + 9
- 10. Activity 2 Pair & Share Activity: Simplify the mathematical expressions and then solve. 1. 4 x 9 + 9 2. 15 – 2 x 5 3. 24 – 2 x 9 4. 1 + 2 x 9 5. 6 + 8 x 8
- 11. Activity 3 Perform the indicated operations. 1) 14 – 8 + 3 = ___ 2) 8 x 2 + 5 = ___ 3) 6 + 8 ÷ 2 = ___ 4) 18 – 10 ÷ 2 = ___ 5) 25 – 7 x 3 = ___
- 12. Activity 4 Solve the following equation. 1) 12 + 13 – 4 x 5 = 2) 15 –10 x 2 + 17 = 3) 65 x 12 + 10 = 4) 16 ÷ 8 x 9 – 2 = 5) 10 x 15 + 8 =
- 13. MDAS rule refers to the order of basic operations such as multiplication, division, addition and subtraction. When performing a series of operations, the MDAS rule must be followed. The rule says that: 1. Multiply or divide as they come from left to right. 2. Add or subtract as they appear from left to right.
- 14. MDAS is followed when there is more than one operation in an equation. It follows the correct order of operation to execute; multiplication and division, before addition and subtraction.
- 15. Assessment Determine the value of the following number sentence: 1) 5 × 2 + 3 2) 5 × 3 + 20 ÷ 4 − 12 3) 15 − 2 + 8 + 10 4) 24 + 18 – 5 × 6 5) 15 − 6 × 2 + 4 ÷ 4
- 16. Thank You
- 17. MATH 4
- 19. Order of Operations (Applying the MDAS rules)
- 20. A. Let’s dance! https://www.youtube.com/watch? v=7bNOmVPj5T8 What are the fundamental operations mentioned?
- 21. B. Have a game. “Pass the Ball” Provide 4 equations and place in the basket. Mechanics: 1. Play a math song. 2. Pass the ball. Once the song stops, the pupil who is holding the ball will be the one to answer one of the equations inside the basket. 3. Repeat until all equations will be answered.
- 22. Choose the letter of the correct answer.
- 23. Look at the number sentences below. Can you do it? 2 x 3 + 4 = N 35 – 6 x 3 = N 7 x 9 – 3 + 8 = N
- 24. Aims Study the following: 2 x 3 + 4 Rule 1 6 + 4 Rule 2 10 Thus, 2 x 3 + 4 = 10
- 25. Aims 35 - 6 x 3 Rule 1 35 - 18 Rule 2 17 Thus, 35 x 6 x 3 = 17
- 26. Activity 1 Solve the following expressions. 1. 25 x 6 – 13 x 4 2. 19 – 12 ÷ 2 3. 48 ÷ 3 x 4 – 12 + 8 4. 72 ÷ 9 x 11 5. 3 x 6 ÷ 2
- 27. Activity 2 Group Activity: Solve the following equation. 1) 4 + 8 ÷ 2 - 7 = 2) 12 x 3 – 4 + 0 = 3) 12 + 13 – 4 x 5 = 4) 15 – 10 x 2 + 17 = 5) 20 + 5 x 4 ÷ 2 =
- 28. Activity 3 Use the digits 7, 8, and 9 to complete each expression.
- 29. Activity 4 Evaluate the following expressions. Write the answer on your answer sheet. 1) 84 ÷ 3 x 4 = 2) 76 – 8 + 5 = 3) 9 x 9 ÷ 3- 9 + 6 = 4) 16 ÷ 4 x 5 – 7 + 8 = 5) 60 + 48 ÷ 2 x 4 =
- 30. MDAS rule refers to the order of basic operations such as multiplication, division, addition and subtraction. When performing a series of operations, the MDAS rule must be followed. The rule says that: 1. Multiply or divide as they come from left to right. 2. Add or subtract as they appear from left to right.
- 31. MDAS is followed when there is more than one operation in an equation. It follows the correct order of operation to execute; multiplication and division, before addition and subtraction.
- 32. Assessment A. Determine the missing number so that the number sentence is correct. 1) 18 ÷ 3 + ___ – 3 × 4 = 9 2) 7 × 3 – 12 ÷ ___ + 6 = 24 3) 8 ÷ ___ + 6 × 8 = 50
- 33. Assessment B. Write >, <, or = on the blank space to compare the two numerical expressions. 4) 6 × 7 – 12 ÷ 3 + 15 _______ 13 + 3 × 4 – 10 ÷ 2 5) 3 × 2 × 5 + 12 ________ 12 ÷ 2 × 6 + 4 – 3
- 34. Thank You
- 35. MATH 4
- 37. Order of Operations (Applying the MDAS rules)
- 38. Mix and Match Provide 5 cards of number sentences and answers. Mechanics: 1. If the teacher says “Mix” the participants will scatter. 2. If the teacher says “Match” the participants will find their partner.
- 39. Number sentence = answer 12 x 6 ÷ 4 23 9 – 7 + 3 18 – 12 ÷ 2 5 x 4 – 16 ÷ 8 18 3 5 18 – 12 ÷ 6 + 7 12
- 40. Answer the following equations carefully: 1) 9 × 6 + 71 2) 15 ÷ 3 × 4 – 5 3) What is the difference between the sum of 288 and 144 and product of 24 and 15?
- 41. In this example, the first operation to execute is multiplication, based from its order from left to right. 9 × 6 + 71 Multiplying 9 and 6 will give you a product of 54. 54 + 71 Finally, add 54 and 71 in order to get the final answer, 125.
- 42. In the second equation, the first operation to execute is division, based from its order from left to right. 15 ÷ 3 × 4 - 5 Dividing 15 and 3 will give you a quotient of 3. 3 × 4 - 5 Then, multiply 3 and 4 to get the product, 12. Finally, subtract 5 from 12 to get the difference, which is 7.
- 43. Aims In the third problem, it must be written as an equation in order to solve it correctly. What is the difference between the sum of 288 and 144 and product of 24 and 15? 288 + 144 – 24 ×15 If you multiply 24 and 15, you’ll get 360. 288 + 144 – 360
- 44. If you multiply 24 and 15, you’ll get 360. 288 + 144 – 360 After getting the products execute the operation from left to right. The sum of 288 and 144 is 432. The difference between 432 and 360 is 72.
- 45. Activity 1 Solve the following equations: 1) 15 + 12 × 25 ÷ 5 2) 8 + 7 – 6 ÷ 3 3) 26 – 13 + 6 × 3 4) 4 × 9 ÷ 2 × 10 + 40 5) 3 × 6 + 14 + 39 × 3
- 46. Activity 2 Group Activity: Evaluate the following expressions. Write the answer on your answer sheet. 1) 12 ÷ 3 + 8 2) 60 + 48 ÷ 2 x 4 3) 84 ÷ 3 x 4 4) 30 ÷ 2 x 4 – 8 + 9 5) 76 – 8 + 5
- 47. Activity 3 Solve the following equations: 1) Provide the correct order of operations to make the equation correct: a) 4 __ 3 ___ 2 ___ 5 = 15 b) 5 __ 8 ___ 5 ___ 7 = 5 c) 12 __ 12 __ 9 = 9 2) The sum of 12 and 4 divided by 2 3) 22 more than the product of 13 and 9
- 48. Activity 4 Translate the following statement into an equation. Write the solution and answer on your answer sheet. 1) What is the difference when 35 is subtracted from the product of 9 and 9? 2. The quotient of 90 and 3 is added to 244. 3. The sum of 24 and 105 is multiplied by 3. 4. Subtract the sum of 417 and 158 from 914. 5. Multiply the sum of 18 and 36 by 9.
- 49. Abstraction MDAS rule refers to the order of basic operations such as multiplication, division, addition and subtraction. When performing a series of operations, the MDAS rule must be followed. The rule says that: 1. Multiply or divide as they come from left to right. 2. Add or subtract as they appear from left to right.
- 50. Abstraction MDAS is followed when there is more than one operation in an equation. It follows the correct order of operation to execute; multiplication and division, before addition and subtraction.
- 51. Assessment Write >, <, or = on the blank to compare the values on the left and right sides. 1) 15 ÷ 3 × 10 ÷ 2 ____ 5 × 6 − 8 ÷ 2 2) 12 + 8 ÷ 2 ____ 10 + 5 × 4 − 10 ÷ 2 − 3 × 3 3) 18 − 5 × 8 ÷ 10 + 3 ____ 75 − 8 ÷ 4 × 3 + 11 4) 5 + 7 × 9 − 8 ____ 6 + 8 × 3 – 10 5) 8 + 2 × 3 ÷ 6 − 4 ____ 5 × 4 − 15
- 52. Thank You
- 53. MATH 4
- 55. Order of Operations (Applying the MDAS rules)
- 56. A. Let’s play the end game! 1. 6 → +4 → -5 →+5 → ___ 2. 7 → x7 →+10 →-8 → ___ 3. 64 → ÷8 → x5 → -15 → ___ 4. 8 → x9 → +10 → -3 → ___ 5. 17 → x3 → x5 →÷15 →
- 57. What is the value of 20 – 8 + 13?
- 58. What is the value of 15 + 27 – 2 – 10 + 17?
- 59. Aims Mrs. Cruz has 30 pupils. She grouped the class into 3 groups. Each pupil in a group gets 2 pencils. How many pencils were received by one group?
- 60. Answer: There are 20 pencils in one group
- 61. Activity 1 Determine the value of the following:
- 62. Activity 2 Determine the missing number so that the number sentence is correct.
- 63. Activity 3 Determine the value of the following: 1) 6 + 42 ÷ 2 – 15 2) 5 + 36 ÷ 2 × 3 – 4 3) 63 ÷ 7 × 3 – 4 4) 25 × 2 – 42 ÷ 6 + 18 5) 36 – 10 × 2 ÷ 5 – 11
- 64. Activity 4 Determine the missing number so that the number sentence is correct. 1) 9 - ___ + 14 × 2 = 30 2) ___ ÷ 5 - 7 = 3 3) 24 ÷ ___ + 5 × 3 + 2 = 20 4) 16 + 8 × 4 – 9 ÷ ___ = 45 5) 36 + 18 ÷ __ - 10 = 35
- 65. MDAS rule refers to the order of basic operations such as multiplication, division, addition and subtraction. When performing a series of operations, the MDAS rule must be followed. The rule says that: 1. Multiply or divide as they come from left to right. 2. Add or subtract as they appear from left to right.
- 66. Abstraction MDAS is followed when there is more than one operation in an equation. It follows the correct order of operation to execute; multiplication and division, before addition and subtraction.
- 67. Assessment Check which solution is correct on the circle.
- 68. Assessment Check which solution is correct on the circle.
- 69. Thank You