what multiplication facts can be found using the arrays 2*9 and 5*9
what multiplication facts can be found using the arrays 2*9 and 5*9?
Homework Answers
An array is a visual used to show a multiplication problem. For example 1 x 3 would be represented with 1 row of 3. OOO
2 x 4 would be represented with 2 rows of 4:
OOOO
OOOO
So to answer your question you would draw it out with 2 rows of 9 and 5 rows of 9:
OOOOOOOOO
OOOOOOOOO
OOOOOOOOO
OOOOOOOOO
OOOOOOOOO
OOOOOOOOO
OOOOOOOOO
Your answer would be solved like this: (2+5) x 9 = 7 x 9 = 63
Multiplication facts: 2 x 9 means two rows times 9 columns.
Facts:
2 x 9 = 18
18/2 = 9
18/9 = 2
9 x 2 = 18
Do the same with the other other numbers.
Also, note that 2 and 9 are factors of 18 and 18 itself is the product of 2 and 9.
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