What multiplication fact can be found by using the arrays for 2 x 9 and 5 x 9?
To find the multiplication fact by using the arrays for 2 x 9 and 5 x 9, we can visualize the arrays for each multiplication problem.
For 2 x 9:
0 1 2 3 4 5 6 7 8
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0| 0 0 0 0 0 0 0 0 0
1| 0 0 0 0 0 0 0 0 0
We have 2 rows and 9 columns, and each cell in the array represents a product. Since we are multiplying 2 by 9, we need to fill in the array with the products of 2 and the numbers from 0 to 8.
For 5 x 9:
0 1 2 3 4 5 6 7 8
_______________________
0| 0 0 0 0 0 0 0 0 0
1| 0 0 0 0 0 0 0 0 0
2| 0 0 0 0 0 0 0 0 0
3| 0 0 0 0 0 0 0 0 0
4| 0 0 0 0 0 0 0 0 0
We have 5 rows and 9 columns, and each cell in the array represents a product. Since we are multiplying 5 by 9, we need to fill in the array with the products of 5 and the numbers from 0 to 8.
To find the multiplication fact, we need to identify the common column. In this case, both arrays have the same column for 9. We can see that in both arrays, the number 9 is in the second column from the left (index 1).
Now, looking at the cells in the second column, we can find the product that corresponds to 2 x 9 and 5 x 9. In the first array, the cell in the second column and the first row (index 0, 1) has the product 18, which is the result of 2 x 9. In the second array, the cell in the second column and the fifth row (index 4, 1) has the product 45, which is the result of 5 x 9.
So, the multiplication fact that can be found by using the arrays for 2 x 9 and 5 x 9 is: 2 x 9 = 18 and 5 x 9 = 45.