2. It is also a mathematical integer and decimal problem. 3. It is also a math application problem.
Belongs to geometry: 4. Tailor cutting and sewing underwear belongs to solid plus plane geometry and curve.
5. The division of apartment type, internal and external structure and the modeling of doors and windows 6. There are circles, platforms,
Cylinder, hemisphere 7. The folding fan used in summer has a fan shape 8. Chopsticks-Line 9. Sunshine.
10. trapezoid-trapezoid 1 1. Stair 12 has a scale problem. Network binary, clocks and watches.
The hexadecimal time belongs to the mathematical carry problem 13. The steelyard is a number axis 14. Work and family planning.
The arrangement of financial expenditure belongs to the problem of score and proportion. There is a collection problem in the non-staple food market.
16. There are problems with the round-trip distance and speed by car. 17. Children's test scores, all courses have general problems.