Arrays
Use the array to write two different multiplication facts.
X X X X X
X X X X X
X X X X X
X X X X X
5 X 4 = 20
4 X 5 = 20
2 groups of 8
16
4 x 2
8
2 x 1 =
2
Samantha is organizing books into boxes. Each box can hold 10 books. If she has 7 boxes, how many books does she have in total?
Solution:
7 × 10 = 70
Samantha has 70 books in total.
Use the array to write two different multiplication facts.
X X X X X
X X X X X
2 X 5 = 10
5 X 2 = 10
9 groups of 5
45
1 x 568
568
___________ x 6 = 36
6
There are 4 shelves in a library, and each shelf has 9 books. How many books are there in total?
Solution:
4 shelves × 9 books = 36 books
Use the array to write two different multiplication facts.
X X X X
X X X X
X X X X
4 X 3 = 12
3 X 4 = 12
3 groups of 7
21
3 x 4
12
2 x _________ = 6
3
There are 10 packs of stickers, and each pack has 8 stickers. How many stickers do you have altogether?
Solution:
8 × 10 = 80
You have 80 stickers altogether.
Use the array to write two different multiplication facts.
X X X X X X X
X X X X X X X
X X X X X X X
X X X X X X X
7 X 4 = 28
4 X 7 = 28
4 groups of 6
24
4 x 4
16
___________ x 6 = 12
2
At a concert, there are 10 rows of chairs. Each row has 6 chairs. How many chairs are there in total?
Solution:
6 × 10 = 60
There are 60 chairs in total.
Use the array to write two different multiplication facts.
X X X X
X X X X
X X X X
X X X X
X X X X
X X X X
6 X 4 = 24
4 X 6 = 24
3 groups of 3
9
8 x 8
64
___ x 9 = 81
9
Samantha has 3 baskets of apples. Each basket has 4 apples. How many apples does Samantha have in total?
Solution:
3 baskets × 4 apples = 12 apples