2.4 Subtraction of Real Numbers

Match the following output to it's mathmatical operation.

Will the answer be positive or negative?

23 + (-10)

Will the answer be positive or negative?

-15 + (37)

Will the answer be positive or negative?

-80 + (-45)

Will the answer be positive or negative?

67 + (-34)

4-9

6-(-3)

-8-(-5)

-2-9

-10-5

25-(-14)

-1-5-8

2-(-4)-7

4-(-3)-(-5)

46-17-(-2)

-15 -16 -81

11- (-23) -77

9.6-6.5

-3-1.7

5.14 - (-3)

-23 - 12 - 9

88 - (-15)

What is the change on Sept.12?

What is the change on Sept. 13?

Do not use a dollar sign.

What is the change on Sept. 14?

Do not use a dollar sign.

What is the change on Sept. 15?

Do not use a dollar sign.

At the county fair, Friday's attendance was 3,294. On Sunday, the attdenance was 2,930. What is the amount of change between the two days.

Remember, if the amount drops, use a negative value.

The band is selling raffle tickets and on their first day of sales sold a total of $325. On the second day, they collect $675. Calculate the amount of change between the two days.

Remember, if the amount drops, use a negative value.

A video game store is taking pre-orders for this season's big game release. When pre-orders opened Thursday morning, they sold 135 games. On Friday, they sold another 83. What is the amount of change between the first and second day of sales?

Remember, if the amount drops, use a negative value.

A video game company released their new app on last Tuesday. On that day, they had only 245 downloads. On the second day, they had 1,874. Calulate the amount of change between the first and second days of the app launch.

Remember, if the amount drops, use a negative value.

On a day of school last week, there were 495 students in the building. On the next day, there were 527 students in attendance. What's the difference in attendances from those two days?