What multiplication fact can be found by using the arrays for 2×9 and 5×9?
Ask ms sue
To find the multiplication facts using arrays, we can count the total number of objects in each array.
For the array representing 2×9:
- We have 2 rows.
- Each row has 9 objects.
Therefore, the total number of objects is 2 × 9 = 18.
For the array representing 5×9:
- We have 5 rows.
- Each row has 9 objects.
Therefore, the total number of objects is 5 × 9 = 45.
So, the multiplication facts that can be found using the arrays for 2×9 and 5×9 are:
- 2 × 9 = 18
- 5 × 9 = 45
To find the multiplication fact for 2×9 and 5×9 using arrays, we can represent each multiplication as a rectangular array.
For 2×9:
```
XX
XX
```
Here, we have 2 rows and 9 columns, and the total number of X's represents the product of 2×9, which is 18.
For 5×9:
```
XXXXX
XXXXX
XXXXX
XXXXX
XXXXX
```
Here, we have 5 rows and 9 columns, and the total number of X's represents the product of 5×9, which is 45.
Therefore, the multiplication fact that can be found by using the arrays for 2×9 and 5×9 is:
2×9 = 18
5×9 = 45