How can you use two multiplication facts to multiply 6 x 9? Use the array below to explain how you might multiply.
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You can do 3*2 which is 6 and 3*3 which is 9. 3*2*3*3=54 or 6*9.
P.S. * means multiply
Thank you so much!
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To use two multiplication facts to multiply 6 x 9, we can think of the problem as finding the area of a rectangle. The given array represents a rectangle with 6 rows and 9 columns, where each asterisk (*) represents a unit.
By observing the array, we can see that it can be separated into two smaller rectangles:
First, we can form a rectangle with 6 rows and 5 columns:
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Second, we can form a rectangle with 6 rows and 4 columns:
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Now, we can determine the area of each rectangle to find the total area of the larger rectangle:
For the 6 x 5 rectangle, we can use the multiplication fact 6 x 5 = 30, which gives us an area of 30 units.
For the 6 x 4 rectangle, we can use the multiplication fact 6 x 4 = 24, which gives us an area of 24 units.
Finally, we add the areas of the two rectangles together to find the total area of the larger rectangle:
30 + 24 = 54
Therefore, by using the two multiplication facts 6 x 5 and 6 x 4, we can find that 6 x 9 = 54.