The sum of the sides of a cube marble is 60 decimeters. What is its volume?
The volume of a steel plate is 38.4 cubic decimeter. The steel plate is 16 decimeter long, 3 cm thick and how many decimeters wide?
Answer:
1, cube volume10 *10 *10 =1000 cubic centimeters, and length 1000÷5÷5=40 centimeters.
2. The side length of a cube is 60÷ 12=5 decimeters, and the volume =5×5×5= 125 cubic decimeters.
3.38.4÷ 16÷0.3=8 decimeters
The second group: 1, Xiaoya helps the teacher bind the materials together, and it takes them two hours to bind 600 materials. Xiaoya can bind two copies per minute, so how many copies can Teacher Zhang bind per minute?
Mix bought a new book. If you read 48 pages a day, 15 days will be enough. In fact, you read the whole book in nine days. How many pages does Mix actually read more than planned every day?
3. Four tons of cement were transported to the construction site, and the workers used up 1. 12 tons in seven days. According to this calculation, how many days can the remaining cement be used?
Xiao Pang and his brother collect stamps. Xiao Pang has 86 stamps, twice as many as his brother. How many stamps do Xiao Pang and his brother have?
Answer: 1, Xiaoya helped the teacher bind the materials together. It took them two hours to bind 600 documents. Xiaoya can bind two copies per minute, so how many copies can Teacher Zhang bind per minute?
2 hours = 120 minutes
2x 120=240 copies.
600-240=360 copies
360/ 120=3 (copies)
Mix bought a new book. If you read 48 pages a day, 15 days will be enough. In fact, you read the whole book in nine days. How many pages does Mix actually read more than planned every day?
48x 15=720 pages
720/9=80 (page)
80-48=32 (page)
3. Four tons of cement were transported to the construction site, and the workers used up 1. 12 tons in seven days. According to this calculation, how many days can the remaining cement be used?
1.12/7 = 0.16 (ton)
4- 1. 12=2.88 (ton)
2.88/0. 16= 18 (days)
Xiao Pang and his brother collect stamps. Xiao Pang has 86 stamps, twice as many as his brother. How many stamps do Xiao Pang and his brother have?
Brother: (86-6)/2=40 (pieces)
* * *: 86+40 = 126 (pieces)
The third group: 1, Xiao Ya and Xiao Ya started from school and walked back to back. Xiao Ya walks 3.5 kilometers per hour, and Xiao Ya walks 0.3 kilometers more than Xiao Ya. Xiao Ya left 0.5 hour earlier than Xiao Ya. Excuse me, how many kilometers are they apart after Xiao Ya walked for 0.2 hours?
Liang Xiao and Xiao Li walked in opposite directions from A and B at the same time. Xiao Liang walks 6 kilometers per hour and Xiao Li walks 4.8 kilometers per hour. When they met, Liang Xiao walked 2.52 kilometers more than Xiao Li to find the speed of A and B.
Answer: 1, Xiaoya walks 3.5+0.3 = 3.8km per hour.
Then Mix walked for 0.5 hours: 3.5*0.5= 1.75 km.
When Xiaoya walked for 0.2 hours, the Cabinet also walked for 0.2 hours. At this time, the distance between two people is:
1.75+(3.5+3.8) * 0.2 = 5.4km。
2. Liang Xiao takes more roads per hour than Xiaoli: 6-4.8 =1.2km.
Then the time when they meet is: 2.52 divided by 1.2=2. 1 hour.
Therefore, the distance between Party A and Party B is: (6+4.8) * 2.1= 22.68km. ..