Solve your problems ...







New! - Multiplication game - catch the hodag!


Adding and subtracting with negatives activity


Factoring Game


How to solve:
Problem:
3 + +5
3 + (-5)
3 - (+5)
3 - -5
-3 + (-5)
-3 - -5
If you see two signs next to each other, change them to a single sign:

++ changes to +
+- changes to -
-+ changes to -
-- changes to +
3 + 5
3 - 5
3 - 5
3 + 5
-3 - 5
-3 + 5
Now there are just two signs. (For example, 3-5 is really +3 - 5)

If the 2 signs are different, the answer has the sign of the larger number.
(5 in this case, since 5 is larger than 3.)

If they're the same, the answer also has the same sign.
+
-
-
+
-
+
If the signs are different, subtract the two numbers.
If they're the same, add.
8
2
2
8
8
2
Final Answer:
8
-2
-2
8
-8
2



Here's one to try:

      






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(Starts timer)
     




              





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