Zack can find the answer to 4×9 by using the fact that 3×9 is equal to 27. He can find the answer by adding 9 to 27 once more, as every time he adds 9, he increases the number by one set of 9.
So, to find 4×9, Zack can add 9 to 27: 27 + 9 = 36.
Therefore, the answer to 4×9 is 36.
The equation to show the answer is: 3×9 + 9 = 36.
ack knows that 3×9=27
but he does not know what 4×9
is.
How can Zack find the answer to 4×9
with the fact that he knows?
What is the answer to 4×9
?
Create an equation to show your answer.
1 answer
16 answers