Question

The value of a stock increases 1423 points twice in one week. The other three days the value decreases by 10 points, 813 points, and 1223 points. By how many points did the value of the stock change that week?

Answer 1

To calculate the change in the value of the stock, add the increases and subtract the decreases. The value of the stock changed by 800 points that week.

Step-by-step explanation:

To calculate the change in the value of the stock, we need to find the sum of the increases and subtract the sum of the decreases.

First, let's find the sum of the increases: 1423 + 1423 = 2846 points.

Now, let's find the sum of the decreases: 10 + 813 + 1223 = 2046 points.

Finally, we subtract the sum of the decreases from the sum of the increases: 2846 - 2046 = 800 points.

Therefore, the value of the stock changed by 800 points that week.