GRADE-1-Q2-MATH-WEEK-7.powerpoint presentation

POWERPOINT PRESENTATION FOR MATH

1. Add 1-digit and 2-digit numbers with sums up to 100 in vertical form without regrouping. WEEK 7 – DAY 1 GRADE 1 QUARTER 2

2. Preliminary Activities: Direction: Add the following: 20 + 22 11 + 70 60 + 18 27 + 60

3. Great job! 

4. Today, we are going to learn how to add 1-digit and 2-digit numbers with sums up to 100 in horizontal form without regrouping.

5. Unlocking of Difficulties: • tens • equals • ones • digits • sum • addends • number sentence • solve • add • place value • plus • value • solution

6. Add 1-digit and 2-digit numbers with sums up to 100 in Vertical Form Without Regrouping

7. Find the sum of…. 52 + 34

8. Ask: How do you find the answer to the equation 52 + 34?

9. Great job! 

10. There are two ways to find the sum: In horizontal form 52 + 34 = 50 + 2 + 30 + 4 = 80 + 6 = 86

11. There are two ways to find the sum: 2. In vertical form 52 = 50 + 2 52 + 34 = 30 + 4 or 34 86 = 80 + 6 86

12. Ask: What do you think is easier to do in adding the numbers? Support your choice.

13. Great job! 

14. Ask: What if the two addends have a different number of digits, like 24 and 5. How can this be written in vertical form?

15. Do it! Get your drill board and write the equation 24 + 5 in vertical form. Then find the sum using your counters.

16. Great job! 

17. In writing the addends and sum in vertical form the digits with the same place value must be aligned or written in the same column.

18. Ask: What are the place values of the digits of 24? Digit 2? Digit 4?

19. Ask: What is the place value of 5?

20. Ask: If we write 24 + 5 in vertical form, which digits should be aligned or in the same column? Why?

21. Great job! 

22. N ow, I will write the equation vertically….. 2 4 + 5 2 9

23. Ask: What do you notice about the placement of the digits of the sum?

24. Ask: What digits are aligned in the number sentence?

25. Ask: Why do you put these digits in the same column?

26. Ask: What is the place value of these digits?

27. Ask: Can we put the digit 5 under digit 2?

28. Ask: Is there any digit under 2? Why?

29. Great job! 

30. Answer Learning Activity Sheet 1

31. Great job! 

32. Ask: What might happen if the digits with the same place value are not aligned or placed in the correct column?

33. Great job! 

34. Remember: Ask: If you are asked to write two addends in vertical form, how would you do it? The digits with the same place value should be aligned in columns.

35. Remember: Ask: How would you find the sum? Add the digits in the same place value or the digits in the column starting from the ones.

36. Direction: Fill in each rectangle with the correct digit.

37. Add 1-to 2-digit Numbers and 2-digit Numbers with sums up to 100 Vertical Form Without Regrouping WEEK 7 – DAY 2 GRADE 1 QUARTER 2

38. Preliminary Activities: Direction: Add the following: 24 + 4 12 + 7 40 + 30 36 + 3

39. Great job! 

40. Today, we are going to learn how to add 1-digit and 2-digit numbers and 2-digit and 2-digit numbers with sums up to 100 in vertical form without regrouping.

41. Unlocking of Difficulties: • tens • equals • ones • digits • sum • addends • number sentence • solve • add • place value • plus • value • solution

42. Add 1-to 2-digit Numbers and 2-digit Numbers with sums up to 100 Vertical Form Without Regrouping

43. Direction: Write the following on the board. Solve it in vertical form. 33 + 15 75 + 4 41 + 26

44. Great job! 

45. Ask: How do you write addition sentence in vertical form?

46. Ask: In which place value should you start adding?

47. Great job! 

48. Direction: Write in vertical form and add. Number 1 has been done for you. 1) 73 + 24 6) 4 + 14 7 3 + 2 4 9 7 2) 22 + 7 7) 35 + 32 3) 45 + 51 8) 21 + 28 4) 25 + 32 9) 34 + 43 5) 3 + 42 10) 8 + 51

49. Great job! 

50. Remember: Ask: How are numbers added in vertical form? In adding numbers in vertical form, align or write the digits of the addends with the same place value in columns. Add the digits in each column starting from the ones digits.

51. Direction: Write in vertical form and add. Number 1 has been done for you.

52. Add 1-to 2-digit Numbers and 2-digit Numbers with sums up to 100 Vertical Form Without Regrouping WEEK 7 – DAY 3 GRADE 1 QUARTER 2

53. Preliminary Activities: Direction: Add the following: 34 + 5 62 + 1 80 + 10 76 + 3

54. Great job! 

55. Today, we are going to learn how to add 1-digit and 2-digit numbers and 2-digit and 2-digit numbers with sums up to 100 in vertical form without regrouping.

56. Unlocking of Difficulties: • tens • equals • ones • digits • sum • addends • number sentence • solve • add • place value • plus • value • solution

57. Add 1-to 2-digit Numbers and 2-digit Numbers with sums up to 100 Vertical Form Without Regrouping

58. Direction: Using your show-me boards, find the sum of the following numbers. 34 + 51 62 + 17 25 + 43 56 + 11 12 + 27

59. Ask: How do you find the answer to the given equation?

60. Great job! 

61. Today, we will be adding more numbers to practice your addition skills. You will do this by performing some games in the four stations around the room. Are you ready?

62. Group Activity The class will be divided into eight (8) teams. Two competing teams will be assigned to each of the stations. The team members take turns in answering the items in each station.

63. The rules in each station are as follows: Station 1: Sum and Addends There are two sets of 10 cards at this station: one for sums and one for addends. The cards are placed face down on a table in random order, with all sums and all addends grouped together. The task is to flip over two cards at a time - one sum card and one addend card addends. The aim is to match them correctly To know if a match is made, they have to add the addends. If the sum is correct, the team earns a point, and the cards are set aside. If the match is incorrect, the cards remain face down. Then, the next pair takes their turn. This activity also serves as a memory game.

64. Example: A match is made. So, the team earns 1 point and the two cards will be set aside.

65. A match is incorrect, the team does not earn a point. The two cards will be turned face down again.

66. The rules in each station are as follows: Station 2: Flash Cards There will be 10 flashcards at this station. Team members will take turns giving the sum. The first one who gives the correct sum earns a point for the team.

67. The rules in each station are as follows: Station 3: Rolling a die In this station, one of the addends are given or shown. Team members will roll a die (dodecahedron) with numbers on its faces. The number that appears will be the other addend. The two assigned members from each team for that turn must give the sum to earn a point for their team. Then, the next pair will take their turn.

68. The rules in each station are as follows: Station 4: Number Mat At this station, a number mat will be used. Written on the number mat are numbers – an addend at the top and other numbers in a grid. Players will throw a chip (or stone) on the mat. The number where the chip lands will be added to the number at the top of the grid. The first team member to give the correct sum earns one point for the team.

69. When the learners have understood the rules in all the stations, assign the volunteers to the different stations. Then, tell the group to proceed to their first station. Teams 1 and 2 - Station 1 Teams 3 and 4 - Station 2 Teams 5 and 6 - Station 3 Teams 7 and 8 - Station 4

70. Remind the learners that all team members should have a chance to participate in the games. The team with the highest score after going to all the stations wins. A prize may be awarded to the winners. Inform them that you will give the go signal to start. After five minutes (which may be extended depending on the class), they have to stop and move to the next station. They should wait for the signal to begin the game at each station.

71. Are you ready? 

72. Great job! 

73. Remember: Ask: What did you do to add the numbers? We wrote the addends in vertical form before we added them. Some may have used mental calculations to find the sum.

74. Apply their Knowledge of Addition to Find the Missing Addend WEEK 7 – DAY 4 GRADE 1 QUARTER 2

75. Direction: Find the sum of ….. 4 5 + 1 3 Preliminary Activities:

76. Great job! 

77. Today, we are going to learn how to add 1-digit and 2-digit numbers with sums up to 100 in horizontal form without regrouping and to apply the skill in addition to finding the missing addend .

78. Unlocking of Difficulties: • tens • equals • ones • digits • sum • addends • number sentence • solve • add • place value • plus • value • solution

79. Applying the Skill in Addition to Find the Missing Addend/s

80. Find the missing number. 4 1 + 2__ 6 7 6

81. Great job! 

82. The missing digit is six because when one is added to six the answer is seven.

83. Find the missing number. 4 + 3__ 8 6 2 5

84. Great job! 

85. The missing digits are 5 in the tens place and 2 in the ones place. Adding 4 and 2 gives 6, while adding 5 and 3 gives 8.

86. Ask: What did you do to find the missing digits?

87. Great job! 

88. Ask: What if an addend is missing, what would you do to find it?

89. 2 6 + ___ 6 7 11 Let us have this example…

90. Ask: How did you know that 11 is the missing addend?

91. Great job! 

92. 4 5 + ___ 6 7 22 Have other examples…

93. 6 2 + ___ 7 5 13 Have other examples…

94. + 3 4 7 5 41 Have other examples…

95. Great job! 

96. Ask: How did you know that these are the numbers that you have to put in the rectangles?

97. Ask: What made you come up with these numbers?

98. Great job! 

99. This time, only the sum is given. They will think of two addends that have the given sum. Let them use their show-me boards to write their answers.

100. + ___ 2 5 Find the missing number…

101. Great job! 

102. Some possible answers: 24 and 1 23 and 2 10 + 15 11 + 14

103. + ___ 3 6 Find the missing number…

104. + ___ 4 9 Find the missing number…

105. Great job! 

106. Remember: Ask: How did you find the missing addend? We think of a number that when added to the given addend gives the sum.

107. Remember: Ask: What did you do when two addends were missing? We thought of two numbers and added them to check if the sum matched the given sum. We looked at the digits of the sum. For the ones digit, we think of two numbers that when added give that digit. We did the same for the tens digit.

108. Direction: Write the missing addend in each number sentence.

109. CATCH UP FRIDAY

110. End of Week 7 