Topic 1 Review

Addition

100

1 + 5

6

200

-2 + (-4)

-6

300

12 + (-12)

0

400

-7 + 3

-4

500

Sam has $25.50. On his birthday his grandmother gives him $10. He then goes to the Milford Post Mall and buys a new toy for 13 1/4 dollars. How much money does he have left if he wants to stop at the food court for lunch? 

25.50 + 10 + (-13.25) = $22.25

Sam will have $22.25 to spend at the food court.

Subtraction

100

10 - 4

6

200

20 - 20

0

300

-8 - 4

-12

400

-9 - (-2)

-7

500

When I got to my car one morning I noticed that it was 46 degrees. As I continued to drive I noticed that temperature dropped 7 degrees. By the time I reached school it dropped another 2 degrees. What was the temperature by the time I reached school?

46 - 7 - 2 = 37 degrees

The temperature is 37 degrees.

Multiplication

100

1/2 x 3/4

3/8

200

7 x (-4)

-28

300

-5 x -3

15

400

12.5 x (-9)

-112.5

500

If Sam's remote control car can go 6.5 feet in 1 second, how far will it go in 15 seconds?

6.5 x 15 = 97.5 feet

The car will travel 97.5 feet.

Division

100

-45 / 9 

-5

200

-15 / -4

3.75 or 3 3/4

300

What is the difference between a terminating and repeating decimal?

Terminating- Comes to an end.

Repeating- Goes on forever and repeats

400

3/4
2/3

9/8 = 1 1/8

500

You and you four friends find $110 on the ground while you are walking down the street. You decide to split the money equally amongst yourselves. How much money does everyone get?

110 / 5 = $22 each.

Everyone will get $22.

Operation Rules

100

Pos x Pos = ?

Pos

200

Neg / Pos = ?

Neg

300

Addition Rule: For adding two integers with the same sign (both pos or both neg) you ____(1)______ and ____(2)______

1. Find the sum

2. Keep the same sign

400

Subtraction Rule: Sometimes we subtraction is the ____(1)____ of the _____(2)_____.

1. Addition

2. Opposite

500

Addition Rule: When you add two numbers that have different signs, you ____(1)______ then _____(2)_____.

1. Find the difference

2. Use sign of larger absolute value.