1.40X90÷45=80 (explanation: 40 people multiplied by 90 days, that is to say, speed multiplied by time equals distance, and 40X90 divided by 45 equals distance divided by speed, which is based on the relationship between distance, time and speed).

2.( 120-76)÷(5-3)=22 (days) (explanation: there are 44 more toffee than coffee candy, and 2 more toffee are sold every day, so that it can be taken off the shelf. )

3.36÷3= 12 (name) Female: 12X2=24 (name) 12X 1= 12 (name) 24-/kloc-. How many boys will there be, and eight girls will be less than boys? Just subtract the number of girls from the number of boys and add 8)

4. 10(20- 18)= 5 (pieces) 18X5=90 (pieces)

Time is short, it is difficult to explain, I hope these answers can help the landlord ~ I made it myself, just like the fake one.