Fifteen Facts
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Transcript of Fifteen Facts
Fifteen Facts
A little show about 3rd grade multiplication facts.
Adapted from work done by Mr. Palmer, Math Coach at Emerson and Hyatt Elementary Schools in Riverside Unified School District.
0 0 0 0 0 0 0 0 0 0 0
0 1 2 3 4 5 6 7 8 9 10
0 2 4 6 8 10 12 14 16 18 20
0 3 6 9 12 15 18 21 24 27 30
0 4 8 12 16 20 24 28 32 36 40
0 5 10 15 20 25 30 35 40 45 50
0 6 12 18 24 30 36 42 48 54 60
0 7 14 21 28 35 42 49 56 63 70
0 8 16 24 32 40 48 56 64 72 80
0 9 18 27 36 45 54 63 72 81 90
0 10 20 30 40 50 60 70 80 90 100
0 1 2 3 4 5 6 7 8 9 10
0
1
2
3
4
5
6
7
8
9
10
0 0 0 0 0 0 0 0 0 0 0
0 1 2 3 4 5 6 7 8 9 10
0 2 4 6 8 10 12 14 16 18 20
0 3 6 9 12 15 18 21 24 27 30
0 4 8 12 16 20 24 28 32 36 40
0 5 10 15 20 25 30 35 40 45 50
0 6 12 18 24 30 36 42 48 54 60
0 7 14 21 28 35 42 49 56 63 70
0 8 16 24 32 40 48 56 64 72 80
0 9 18 27 36 45 54 63 72 81 90
0 10 20 30 40 50 60 70 80 90 100
0 1 2 3 4 5 6 7 8 9 10
0
1
2
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There are 121 multiplication facts
for 0 through 10
You learned many of the facts in second grade.
In 2nd grade, you learned 85 multiplication facts
You learned- Zero property- Identity property- 2s, 5s, and 10s
That’s 85 multiplication facts.(36 to go)
Let’s review the facts and properties you learned in
second grade.
0 0 0 0 0 0 0 0 0 0 0
0 1 2 3 4 5 6 7 8 9 10
0 2 4 6 8 10 12 14 16 18 20
0 3 6 9 12 15 18 21 24 27 30
0 4 8 12 16 20 24 28 32 36 40
0 5 10 15 20 25 30 35 40 45 50
0 6 12 18 24 30 36 42 48 54 60
0 7 14 21 28 35 42 49 56 63 70
0 8 16 24 32 40 48 56 64 72 80
0 9 18 27 36 45 54 63 72 81 90
0 10 20 30 40 50 60 70 80 90 100
0 1 2 3 4 5 6 7 8 9 10
0
1
2
3
4
5
6
7
8
9
10
Zero Property
1 2 3 4 5 6 7 8 9 10
2 4 6 8 10 12 14 16 18 20
3 6 9 12 15 18 21 24 27 30
4 8 12 16 20 24 28 32 36 40
5 10 15 20 25 30 35 40 45 50
6 12 18 24 30 36 42 48 54 60
7 14 21 28 35 42 49 56 63 70
8 16 24 32 40 48 56 64 72 80
9 18 27 36 45 54 63 72 81 90
10 20 30 40 50 60 70 80 90 100
0 1 2 3 4 5 6 7 8 9 10
0
1
2
3
4
5
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8
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Zero Property
1 2 3 4 5 6 7 8 9 10
2 4 6 8 10 12 14 16 18 20
3 6 9 12 15 18 21 24 27 30
4 8 12 16 20 24 28 32 36 40
5 10 15 20 25 30 35 40 45 50
6 12 18 24 30 36 42 48 54 60
7 14 21 28 35 42 49 56 63 70
8 16 24 32 40 48 56 64 72 80
9 18 27 36 45 54 63 72 81 90
10 20 30 40 50 60 70 80 90 100
0 1 2 3 4 5 6 7 8 9 10
0
1
2
3
4
5
6
7
8
9
10
Identity Property
4 6 8 10 12 14 16 18 20
6 9 12 15 18 21 24 27 30
8 12 16 20 24 28 32 36 40
10 15 20 25 30 35 40 45 50
12 18 24 30 36 42 48 54 60
14 21 28 35 42 49 56 63 70
16 24 32 40 48 56 64 72 80
18 27 36 45 54 63 72 81 90
20 30 40 50 60 70 80 90 100
0 1 2 3 4 5 6 7 8 9 10
0
1
2
3
4
5
6
7
8
9
10
Identity Property
4 6 8 10 12 14 16 18 20
6 9 12 15 18 21 24 27 30
8 12 16 20 24 28 32 36 40
10 15 20 25 30 35 40 45 50
12 18 24 30 36 42 48 54 60
14 21 28 35 42 49 56 63 70
16 24 32 40 48 56 64 72 80
18 27 36 45 54 63 72 81 90
20 30 40 50 60 70 80 90 100
0 1 2 3 4 5 6 7 8 9 10
0
1
2
3
4
5
6
7
8
9
10
Delicious Doubles
9 12 15 18 21 24 27 30
12 16 20 24 28 32 36 40
15 20 25 30 35 40 45 50
18 24 30 36 42 48 54 60
21 28 35 42 49 56 63 70
24 32 40 48 56 64 72 80
27 36 45 54 63 72 81 90
30 40 50 60 70 80 90 100
0 1 2 3 4 5 6 7 8 9 10
0
1
2
3
4
5
6
7
8
9
10
Delicious Doubles
9 12 15 18 21 24 27 30
12 16 20 24 28 32 36 40
15 20 25 30 35 40 45 50
18 24 30 36 42 48 54 60
21 28 35 42 49 56 63 70
24 32 40 48 56 64 72 80
27 36 45 54 63 72 81 90
30 40 50 60 70 80 90 100
0 1 2 3 4 5 6 7 8 9 10
0
1
2
3
4
5
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8
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Fabulous Fives
9 12 18 21 24 27 30
12 16 24 28 32 36 40
18 24 36 42 48 54 60
21 28 42 49 56 63 70
24 32 48 56 64 72 80
27 36 54 63 72 81 90
30 40 60 70 80 90 100
0 1 2 3 4 5 6 7 8 9 10
0
1
2
3
4
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Fabulous Fives
9 12 18 21 24 27 30
12 16 24 28 32 36 40
18 24 36 42 48 54 60
21 28 42 49 56 63 70
24 32 48 56 64 72 80
27 36 54 63 72 81 90
30 40 60 70 80 90 100
0 1 2 3 4 5 6 7 8 9 10
0
1
2
3
4
5
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8
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Thinking Tens
9 12 18 21 24 27
12 16 24 28 32 36
18 24 36 42 48 54
21 28 42 49 56 63
24 32 48 56 64 72
27 36 54 63 72 81
0 1 2 3 4 5 6 7 8 9 10
0
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Thinking Tens
Then using the commutative property takes away
15 more facts.(21 to go)
9 12 18 21 24 27
12 16 24 28 32 36
18 24 36 42 48 54
21 28 42 49 56 63
24 32 48 56 64 72
27 36 54 63 72 81
0 1 2 3 4 5 6 7 8 9 10
0
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2
3
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8
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10
Commutative Property
9
12 16
18 24 36
21 28 42 49
24 32 48 56 64
27 36 54 63 72 81
0 1 2 3 4 5 6 7 8 9 10
0
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Commutative Property
If we learn the sizzling squares, that’s six more facts
9
12 16
18 24 36
21 28 42 49
24 32 48 56 64
27 36 54 63 72 81
0 1 2 3 4 5 6 7 8 9 10
0
1
2
3
4
5
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8
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10
Sizzling Squares
12
18 24
21 28 42
24 32 48 56
27 36 54 63 72
0 1 2 3 4 5 6 7 8 9 10
0
1
2
3
4
5
6
7
8
9
10
Sizzling Squares
12
18 24
21 28 42
24 32 48 56
27 36 54 63 72
0 1 2 3 4 5 6 7 8 9 10
0
1
2
3
4
5
6
7
8
9
10
3436 4637 47 6738 48 68 7839 49 69 79 89
How many facts are left? 15
These 15 multiplication facts are our focus for learning 3rd grade.
3436 4637 47 6738 48 68 7839 49 69 79 89
0 0 0 0 0 0 0 0 0 0 0
0 1 2 3 4 5 6 7 8 9 10
0 2 4 6 8 10 12 14 16 18 20
0 3 6 9 12 15 18 21 24 27 30
0 4 8 12 16 20 24 28 32 36 40
0 5 10 15 20 25 30 35 40 45 50
0 6 12 18 24 30 36 42 48 54 60
0 7 14 21 28 35 42 49 56 63 70
0 8 16 24 32 40 48 56 64 72 80
0 9 18 27 36 45 54 63 72 81 90
0 10 20 30 40 50 60 70 80 90 100
0 1 2 3 4 5 6 7 8 9 10
0
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Fifteen Facts in 3rd Grade