question_answer 13)

In a quiz, team A scored ? 40, 10, 0 and team B scored 10, 0, ? 40 in three successive rounds. Which team scored more? Can we say that we can add integers in any order?

Answer:

                Total score of team A\[=(-40)+10+0=\left( -40 \right)+10\] \[=-\left( \text{4}0-\text{1}0 \right)=-\text{3}0\] Total score of team B \[=\text{1}0+0+\left( -\text{ 4}0 \right)=\text{1}0+\left( -\text{ 4}0 \right)\] \[=-\left( \text{4}0-\text{1}0 \right)=-\text{3}0\] So, both the teams scored equally. Yes! We can say that we can add integers in any order.