Use the Associative Property of Addition to find the total of 1, 10, and 18 in two different ways.

A. 1 + 10 + 18 = 11 + 18 = 29; 10 + 18 + 1 = 28 + 1 = 29
B. 1 + 10 + 18 = 11 + 18 = 29; 18 + 10 + 1 = 28 + 1 = 29
C. (1 + 10) + 18 = 11 + 18 = 29; 1 + (10 + 18) = 1 + 28 = 29
D. (1 + 10) + 18 = 11 + 18 = 29; (10 + 1) + 18 = 11 + 18 = 29

C?

C is probably the best choice. It is a poor question.

Thank you so much :D

Yes, the correct answer is C.

According to the Associative Property of Addition, changing the grouping of the numbers being added does not change the sum.

In option C, you can group (1 + 10) together and add it to 18, which gives you 11 + 18 = 29. Alternatively, you can group (10 + 18) together and add 1 to it, which also gives you 11 + 18 = 29.

So both ways of grouping the numbers result in the same sum of 29.

Yes, Option C is correct. Using the Associative Property of Addition, you can group the numbers in different ways without changing the sum.

In this case, you have three numbers: 1, 10, and 18. The Associative Property allows you to group them as (1+10)+18 or 1+(10+18).

So, (1 + 10) + 18 = 11 + 18 = 29
And, 1 + (10 + 18) = 1 + 28 = 29

Both calculations yield the same result of 29, which is the total of 1, 10, and 18.