The answer is 7/10 because 3 1/2 divided by 5 = 7/10
The answer to your question is 54 because you have to bring over 2 to 3 and it would be 1x then bring over 52 and add it to 2 = 54
650 kilometers divided by 4 centimeters. / 650 ÷ 4 (for your answer).
When adding/subtracting with different signs, u subtract and take the sign of the larger number.
2 - 7 = -5
7 - 2 = 5