8 x 8 = (__ x 8) + (4 x 8)
8 x 8 = (4 x 8) + (4 x 8)
3 x 8 =___
24
6 x 7 = ___
42
What is the missing number?
8 x (3 x 6) = (8 x 3) x ___
6
8 x 4 = ___
32
5 x 7 = (3 x 7 ) + (2 x __ )
5 x 7 = (3 x 7 ) + (2 x 7)
7 x 3 = ___
21
6 x 4 = ___
24
What is the missing number?
5 x (2 x 9) = (5 x __) x 9
2
8 x 8 = ___
64
6 x 8 = (4 x __ ) + (2 x 8)
6 x 8 = (4 x 8) + (2 x 8)
Find 3 x 7
2 x 7 = __
1 x 7 = __
__ + __ =
So, 3 x 7 = __
2 x 7 = 14
1 x 7 = 7
14 + 7 =
So, 3 x 7 = 21
You can find 7 x 9 by breaking a large array into two smaller arrays. Use smaller arrays for multiplication facts that you know, such as 2s facts, 5s facts, or doubles facts. Use two smaller arrays to find 7 x 9.
5 x 9 = 45
2 x 9 = 18
45 + 18 = 63
So, 7x9 = 63
2 x 3 x 2
12
To solve a multiplication equation that has 8 as a factor, you can break it into two or more facts. You can use a 4s fact and double it to find the product. Split the 8 x 7 array into two equal groups.
4 x 7 = 28
4 x 7 = 28
28 + 28 = 56
So, 8 x 7 = 56
Rafael broke up an array for 6 x 3 into two new arrays. Both of his new arrays are the same. What were the two arrays?
Two 3 x 3 arrays
4 x 8 = (2 x 8) + (2 x 8)
4 x 8 = 16 + 16
4 x 8 = 32
There are 32 books on the shelves
Break the array into two smaller arrays using a doubles fact and solve 6x8.
3 x 8 = 24
3 x 8 = 24
24 + 24 = 48
So, 6 x 8 = 48
5 x 2 x 4
40
8 x 9 = (2 x 9) + (2 x 9) + (2 x 9) + (2 x 9)
8 x 9 = 18 + 18 + 18 + 18
8 x 9 = 72
Draw a 4 x 5 array. Break the array into 2 smaller arrays. Write and solve the multiplication facts for the smaller arrays. Then add the products to find the product of 4 x 5.
Answers will vary.
Draw an array to show 3 x 9. Then break apart the array to show how you can use a 2s fact and a 1s fact to solve the problem.
Answers will vary.
Draw a 7 x 6 array. Then, break the array into smaller arrays to find the product of 7 x 6.
Answers will vary.
3 x 6 x 2
36
Draw an array for 8 x 10. Describe how you could solve 8 x 10 by doubling a 4s fact or by using 2s facts.
Answers will vary.