to ensure and re-check your work you use the opposite signs (addition & subtractions, multiplication & division)
e.g.
__= blank
10+ _ = 12
_=2
to check: you take the answer (in this case 12) and subtract (because its the opposite of addition) by the blank you filled in (2 in this case.
therefore, 12-2=10 so we know its correct :-)
Subtraction is used to check addition.
Addition is the opposite of subtraction. For example, 24 - 9 = 15. If you want to check your answer, add 9 + 15. It equals 24, so your answer is correct.
addition and subtraction
for addition you take the sum and subtract one of the numbers being added from it and for subtraction you add the difference with the second number being subtracted so it equals the first number
d-a-s division-addition-subtraction
You don't. You can check addition with subtraction or subtraction with addition, since subtraction is the opposite of addition. Similary, you can check division with multiplication, or vice versa.
Subtraction is used to check addition.
Addition is the opposite of subtraction. For example, 24 - 9 = 15. If you want to check your answer, add 9 + 15. It equals 24, so your answer is correct.
You can use addition to check your answer to a subtraction problem because subtraction is the inverse operation of addition. If you subtract a number from another and then add that same number back to your result, you should arrive at the original number. This relationship confirms the accuracy of your subtraction result, ensuring that the calculations are correct. If the sum does not match the original number, then there was likely an error in the subtraction process.
who discovered addition and subtraction.
definiton of addition and subtraction
Addition and subtraction are reverse operations.
Addition is the inverse operation to subtraction.
Addition and subtraction are inverse functions.
Subtraction can be seen as the inverse operation to addition.
Subtraction is the addition of a negative number.
Addition is a sum and so is subtraction. So there's your answer!