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When you add a positive number and a negative number, you subtract their absolute values and use the sign of the number with the greater absolute value. In this case, 10 plus -10 equals 0, since the absolute value of 10 is greater than the absolute value of -10.
Oh, dude, you're hitting me with the tough math questions, huh? Alright, so when you add 10 and -10, it's like they cancel each other out, so the answer is 0. It's like you're putting $10 in one pocket and taking out $10 from the other pocket - you're back to square one, man.
10 + 10 + 10 + 5 + 5 +1 = 41.
10 X 10 = 100 You can do this four ways: You can do it mentally in your head or you can add them all up on paper by lining up the numbers correctly with each other. You can use a calculator and that is the easiest way. An alternate way is to multiply 10 by 10.
10 + 10 + 10 = 30
18 + 10 + 28 + 10 = 66
A plus