1. To transport 29.5 tons of coal, transport it three times by a truck with a load of 4 tons, and transport the rest by a truck with a load of 2.5 tons. How many times will it take to complete? ?

2. The trapezoidal site covers an area of 90 square meters, with an upper bottom of 7 meters and a lower bottom of 1 1 meter. How high is it? ?

A workshop plans to produce 5480 parts in April. It has been in production for 9 days, and there are 908 more to complete the production plan. How many pieces will be produced on average every day in these 9 days? ?

4. Two cars, Party A and Party B, are driving in opposite directions from two places 272km apart. Three hours later, the distance between the two cars is still 17km. A travels 45 kilometers per hour, and B travels how many kilometers per hour? ?

5. There are two classes in grade six in a school, and the average score of mathematics last semester is 85. There are 40 students in six classes (1) with an average score of 87. 1. There are 42 students in Class Six (2). What is the average score?

1. The school bought 10 boxes of chalk. 250 boxes have been used, and there are 550 boxes left. How many cases are there in each case on average? ?

There are 200 students in grade four. During extracurricular activities, 80 girls went to jump rope. The boys are divided into five groups to play football. How many people are in each group? ?

3. The canteen sent 150 kg of rice, which was 30 kg less than the flour. How many kilograms of flour does the canteen send? ?

There are 52 peach trees and 6 rows of pear trees in the orchard, and there are 20 more pear trees than peach trees. How many pear trees are there in each row on average? ?

5. The area of a triangular land is 840 square meters, the bottom is 140 meters, and the height is how many meters? ?