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What is an inverse property of subtraction?
Addition. Start with nothing. Add 10. Subtract 10. Or first subtract 10, then add 10. Result is back where you started.
How do you add 34 plus 56?
First you line them up like this.... 34 +56 _____ Then you start by adding 4+6= 10 so you carry the 1 from 10 up on top of the 3 then you add the 5+3=8 then you have to add the 1 to that so it would be 5+3+1=9 so your answer would be 90
What could you add to 542 to make it divisible by 10?
You would add 8 - making the number 550. 550 divided by 10 is 55.
Do you always regroup when adding?
only when the answer is 10 or more, for example, 14+18, you would add the four and the eight which would give you 12, you would keep the 2 and add it to the next part of the problem you would do, which is 1+1 (actually 10 plus 10) and then you add the one from the 12 and then you get 3. But if you were doing 4+4, you wouldn't have to.
How do you solve -2x plus 7 plus 5x equals 10?
well first you combine the x's, which would mean you have to add -2x and 5x which results 3x+7=10, then, you subtract 7 from 10, and get 3, and all you have is this : 3x=3 which would mean that x=1
