What multiplication fact can be found by using the arrays for 2 x 9 and 5 x 9 in words?
The multiplication fact that can be found by using the arrays for 2 x 9 and 5 x 9 in words is "Two groups of nine is eighteen, and five groups of nine is forty-five."
The multiplication fact that can be found by using the arrays for 2 x 9 is "2 groups of 9 equal 18" in words.
The multiplication fact that can be found by using the arrays for 5 x 9 is "5 groups of 9 equal 45" in words.
To find the multiplication fact for 2 x 9 and 5 x 9 in words, you need to understand what an array is and how it can represent multiplication.
An array is a grid of rows and columns used to organize objects or numbers. In this case, we need to create arrays for 2 x 9 and 5 x 9. Each number in the array represents a group of objects or a factor in the multiplication problem.
For 2 x 9, we create an array with 2 rows and 9 columns:
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
Each number "1" in the array represents one object or one unit. There are 2 rows, and each row has 9 "1"s. So, when you count all the "1"s in the array, you get the product of 2 x 9, which is 18.
Similarly, for 5 x 9, we create an array with 5 rows and 9 columns:
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
Counting all the "1"s in the array gives you the product of 5 x 9, which is 45.
Therefore, the multiplication facts for 2 x 9 and 5 x 9 in words are:
- 2 x 9 = 18
- 5 x 9 = 45