1. 5 Minute Check
Complete in your notebook. Find

2. 5 Minute Check
Complete in your notebook. Find

3. 5 Minute Check
Complete in your notebook. Find =

4. 5 Minute Check
Complete in your notebook. Find

5. 5 Minute Check
Complete in your notebook. Find =

6. 5 Minute Check
Complete in your notebook. Find

7. 5 Minute Check
Complete in your notebook. Find =

8. 5 Minute Check
Complete in your notebook. Find

9. 5 Minute Check
Complete in your notebook. Find =

10. Review Lesson 1 Multiplication
Friday, Aug 19
Review Lesson 1 Multiplication

11. Multiplication
Objective: To understand how to multiply whole numbers.

12. Multiplication
What is multiplication in math?

13. Multiplication
What is multiplication in math? Multiplication is repeated addition.

14. Multiplication
What is addition in math?

15. Multiplication
What is addition in math? Addition is repeated counting.

16. Multiplication
What is addition in math? Addition is repeated counting.

17. Multiplication
If you were in kindergarten, how would you determine how many apples there are?

18. Multiplication
If you were in kindergarten, how would you determine how many apples there are? You would probably count the apples.

19. Multiplication
If you were in 2nd grade, how would you determine how many apples there are?

20. Multiplication
If you were in 2nd grade, how would you determine how many apples there are? You would probably add the number of apples in each row. 5 +
5 = 15

21. Multiplication
If you were in 4th grade, how would you determine how many apples there are?

22. Multiplication
If you were in 4th grade, how would you determine how many apples there are? You would probably multiply the number of rows by the number of columns. 5 3
5 x 3 = 15

23. Multiplication
Why would you pick one method over another?

24. Multiplication
What is this?

25. Multiplication

26. Multiplication
Multiples list for 1. 0,1, 2,3, 4, 5,6 7, 8, 9,10……. Can we spot any patterns?

27. Multiplication
Multiples list for 2. 0,2 ,4 ,6 , 8 ,10 , 12 , 14, 16, 18, 20……. Can we spot any patterns?

28. Multiplication
Multiples list for 3. 0 ,3 ,6 , 9 , 12 , 15, 18, 22, 24, 27, 30……. Can we spot any patterns?

29. Multiplication
Multiples list for 4. 0 ,4, 8, 12, 16, 20, 24, 28, 32, 36, 40……. Can we spot any patterns?

30. Multiplication
Multiples list for 5. 0 ,5, 10, 15, 20, 25, 30, 35, 40, 45, 50……. Can we spot any patterns?

31. Multiplication
Multiples list for 6. 0 ,6, 12, 18, 24, 30, 36, 42, 48, 54, 60……. Can we spot any patterns?

32. Multiplication
Multiples list for 7. 0 ,7, 14, 21, 28, 35, 42, 49, 56, 63, 70……. Can we spot any patterns?

33. Multiplication
Multiples list for 8. 0 ,8, 16, 24, 32, 40, 48, 56, 64, 72, 80……. Can we spot any patterns?

34. Multiplication
Multiples list for 9. 0 ,9, 18, 27, 36, 45, 54, 63, 72, 81, 90……. Can we spot any patterns?

35. Multiplication
Multiples list for ,10,20,30,40,50,60,70,80,90,100……. Can we spot any patterns?

36. Multiplication
What is this?

37. Multiplication
5 x 1,000,000

38. Multiplication
5 x 1,000, x 100,000

39. Multiplication
5 x 1,000, x 100, x 10,000

40. Multiplication
5 x 1,000, x 100, x 10, x 1,000

41. Multiplication
5 x 1,000, x 100, x 10, x 1, x 100

42. Multiplication
5 x 1,000, x 100, x 10, x 1, x x 10

43. Multiplication
5 x 1,000, x 100, x 10, x 1, x x x 1

44. 32 x 4 Multiplication Let’s look at a simple multiplication problem.
What do we do first?

45. Multiplication
Let’s look at a simple multiplication problem. 32
x 4 8

46. 32 x 4 8 Multiplication Let’s look at a simple multiplication problem.
What is next?

47. Multiplication
Let’s look at a simple multiplication problem. 32
x 4
128
How does this work?

48. Multiplication
Let’s look at a simple multiplication problem. 32
x 4
128
Is the same as:
2 x x 4

49. 32 x14 Multiplication Let’s look at a simple multiplication problem.
What do we do first?

50. Multiplication
Let’s look at a simple multiplication problem. 32
x14
128
What do we do next?

51. Multiplication
Let’s look at a simple multiplication problem. 32
x14
128
Why ?

52. Multiplication
Let’s look at a simple multiplication problem. 32
x14
128
Why ?
We are actually multiplying 10 x 32 and anytime you multiply by 10, it ends in a zero.

53. Multiplication
Let’s look at a simple multiplication problem. 32
x14
128
What do we do next?

54. Multiplication
Let’s look at a simple multiplication problem. 32
x14
128
320
What do we do next?

55. Multiplication
Let’s look at a simple multiplication problem. 32
x14
128
+320
448
What does this work?

56. Multiplication
Let’s look at a simple multiplication problem. 32
x14
128
+320
448
What does this work?
2 x x x x 30

57. Multiplication
Do this on your own. 23
x12

58. 23 x12 46 +230 Multiplication Do this on your own. 276 Check:
2 x x x x 20

59. Multiplication
Do this on your own. 45
x17

60. 45 x17 315 +450 Multiplication Do this on your own. 3 765 Check:
7 x x x x 40

61. Multiplication
Do this on your own. 63
x25

62. 63 x25 315 +1260 Multiplication Do this on your own. 1 1575 Check:
5 x x x x 60

63. Multiplication
Another way of multiplying 2 two digit numbers.
23 x 12 =

64. Multiplication
Another way of multiplying 2 two digit numbers.
23 x 12 =
Step 1 –
Multiply the first digits in each number.

65. Multiplication
Another way of multiplying 2 two digit numbers.
23 x 12 = 2
Step 1 –
Multiply the first digits in each number.

66. Multiplication
Another way of multiplying 2 two digit numbers.
23 x 12 = 2
Step 2 –
Leave a blank spot for one digit.

67. Multiplication
Another way of multiplying 2 two digit numbers.
23 x 12 = 2_
Step 2 –
Leave a blank spot for one digit.

68. Multiplication
Another way of multiplying 2 two digit numbers.
23 x 12 = 2_
Step 3 –
Multiply the last digits in each number.

69. Multiplication
Another way of multiplying 2 two digit numbers.
23 x 12 = 2_6
Step 3 –
Multiply the last digits in each number.

70. Multiplication
Another way of multiplying 2 two digit numbers.
23 x 12 = 2_6
Step 4 –
Add the product of the outer numbers and the product of the inner numbers and place in the blank spot.

71. Multiplication
Another way of multiplying 2 two digit numbers.
23 x 12 = 2_6 4
Step 4 –
Add the product of the outer numbers and the product of the inner numbers and place in the blank spot.

72. Multiplication
Another way of multiplying 2 two digit numbers.
23 x 12 = 276
4+ 3 = 7
Step 4 –
Add the product of the outer numbers and the product of the inner numbers and place in the blank spot.

73. Multiplication
Another way of multiplying 2 two digit numbers.
32 x14

74. Multiplication
Another way of multiplying 2 two digit numbers.
32 x14 = 3

75. Multiplication
Another way of multiplying 2 two digit numbers.
32 x14 = 3_

76. Multiplication
Another way of multiplying 2 two digit numbers.
32 x14 = 3_8

77. Multiplication
Another way of multiplying 2 two digit numbers.
32 x14 = 3_8
= 14

78. Multiplication
Another way of multiplying 2 two digit numbers. +1
32 x14 = 348 = 448
= 14

79. 32 x14 = 348 = 448 12 + 2 = 14 Why does this work? Multiplication
Another way of multiplying 2 two digit numbers. +1
32 x14 = 348 = 448
= 14
Why does this work?

80. Multiplication
Another way is the Chinese method of multiplying numbers.
23 x 12

81. Multiplication
Another way is the Chinese method of multiplying numbers.
23 x 12

82. Multiplication
Another way is the Chinese method of multiplying numbers.
23 x 12

83. Multiplication
Another way is the Chinese method of multiplying numbers.
23 x 12

84. Multiplication
Another way is the Chinese method of multiplying numbers.
23 x 12

85. Multiplication
Another way is the Chinese method of multiplying numbers.
23 x 12

86. Multiplication
Another way is the Chinese method of multiplying numbers.
23 x

87. Multiplication
Another way is the Chinese method of multiplying numbers.
23 x

88. Multiplication
Another way is the Chinese method of multiplying numbers.
23 x

89. Multiplication
Another way is the Chinese method of multiplying numbers.
23 x

90. Multiplication
Another way is the Chinese method of multiplying numbers.
23 x =

91. 23 x 12 = 2 7 6 Why does this work? Multiplication
Another way is the Chinese method of multiplying numbers.
23 x =
Why does
this work?

92. Multiplication
Multiply.
17 x 11

93. Multiplication
Multiply.
17 x 11 17
x11
+170
187

94. Multiplication
Multiply.
26 x 12

95. Multiplication
Multiply.
26 x 12 1 26
x12 52
+260
312

96. Multiplication
Multiply.
57 x 25

97. Multiplication
Multiply.
57 x 25 57
x25
285
+1140
1425

98. Multiplication
Multiply.
45 x 11

99. Multiplication
Multiply.
45 x 11 45
x11
+450
495

100. Multiplication 11 Multiples List
11 x 11 = x 11 = 231
12 x 11 = x 22 = 242
13 x 11 = 143
14 x 11 = 154
15 x 11 = 165
16 x 11 = 176
17 x 11 = 187
18 x 11 = 198
19 x 11 = 209
20 x 11 = 220
Can you make a short cut to multiply numbers by 11?

101. Multiplication
45 x 11 To multiply a number by 11, the product’s first digit will be the first digit of the number you multiply by 11. 4

102. Multiplication
45 x 11 To multiply a number by 11, the product’s last digit will be the last digit of the number you multiply by 11. 4_5

103. Multiplication
45 x 11 To multiply a number by 11, the product’s middle digit will be the sum of the digits you multiply by

104. Multiplication
53 x 11 The first digit?

105. Multiplication
53 x 11 The last digit? 5

106. Multiplication
53 x 11 The middle digit? 5_3

107. Multiplication
53 x

108. Multiplication
49 x 11 The first digit?

109. Multiplication
49 x 11 The last digit? 4

110. Multiplication
49 x 11 The middle digit? 4_9

111. Multiplication
49 x 11 The middle digit? 539

112. Multiplication
65 x 11

113. Multiplication
65 x

114. Multiplication
This short cut also works with numbers large than two digits. The first digit? 423 x 11

115. Multiplication
This short cut also works with numbers large than two digits. The last digit? 423 x 11 4_3

116. Multiplication
This short cut also works with numbers large than two digits. The first middle digit? 423 x 11 4_3

117. Multiplication
This short cut also works with numbers large than two digits. The second middle digit? 423 x 11 46_3

118. Multiplication
This short cut also works with numbers large than two digits. The second middle digit? 423 x

119. Multiplication
This short cut also works with numbers large than two digits. 423 x

120. Multiplication
526 x 11

121. Multiplication
526 x

122. Multiplication
Agenda Notes Skills Practice R.1 Due by the end of class. Show all work and circle all answers!