This week we took our first math test. It was on adding, subtracting, multiplying, and dividing negative numbers and combining like terms. When adding a negative number, keep in mind that it’s pretty much the same as subtracting a positive. When subtracting a negative, it’s the same as adding a positive. When multiplying, multiply the two numbers together and count the amount of negative factors in the expression. If the number of negative factors is odd, the answer is negative. If the number is even, the number is positive.
Here’s an example.
4*-7=-28
-3*-5=15
Good job Lars! I get it now 🙂 -1 * -1 * -1 = -1 but -1 * -1 * -1 * -1 = 1. Good explanation of your learning. We’re off to a good start.