1, salary and other income are positive, and expenditure is negative.
2. Profit is positive and debt is negative.
3. The buildings on the ground are on the first and second floors, and the underground is on the negative floor.
The temperature is divided into zero and below zero, and below zero is negative.
5. Altitude: The lowest altitude in Turpan Basin is 155m, that is, the altitude is minus 155m.
Scores used in life:
1, two children share the apple. To be fair, each child shares half.
When you buy clothes, the clerk tells you that you can get a 10% discount, which means the price is nine tenths of the original price.
This year's drought, farmers say the harvest is only 50% of last year's, that is, five tenths.
4, pick up a bottle of juice, the child wants to drink, but the mother said that she can only drink one third, otherwise it will affect her health.
5, pick up mouthwash, generally used to pour one tenth in a small container, and then fill it with water, you can rinse your mouth and the like. To sum up, for example, when the object to be processed or the things involved are incomplete, a fraction can be used to represent a part.