Show:
Rules
Addition
Subtraction
Rewrite
Challenge
100
When you add two positives you (sometimes/always/never) get a positive sum.
What is always
100
(-4) + (+8) =
(+4)
100
(-1) - (-1)
What is 0
100

Rewrite 7−(−3) as an addition problem.

7+3

100

100: −4+7−2

What is 1

200
When you add two negatives you (sometimes/always/never) get a positive sum.
What is never
200
(-12) + (-12) =
What is (-24)
200
(-20) - (+10)
What is (-30)
200

Rewrite −5−4 as an addition problem. 

−5+(−4)

200

200: 8−(−3)+1

What is (12)

300

400: What does subtracting a negative number turn into?

Adding a positive number

300
(-50) + (-75) =
What is (-125)
300
(-45) - (-15) =
What is (-30)
300

Rewrite −12−(−8) as an addition problem

-12+8

300

−6−5+9

What is (-2)

400

When you subtract a negative integer, you (sometimes/always/never) change it to addition.

What is always

400
(-100) + (+25) =
What is (-75)
400
(-224) - (-25) =
What is (- 199)
400

Rewrite 102-(-29) as an addition problem

What is 102+29

400

400: −12−(−7)−4

What is (-9)

500
You call both positive and negative whole numbers this.
What are integers
500
(-501) + (+500)
What is (-1)
500
(-5012) - (-28)
What is (-4984)
500

Rewrite -1350-(-503) as an addition problem

-1350+503

500

500: −20+6−(−8)+3

What is (-3)