The reference answers are equally long. (Figure diversification)

Check the importance of content scores.

Question 1 1 Zhang Zhongjia bought a new suite164m2. His living room is a square floor with an area of 64 square meters. If the living room is paved with square tiles with a side length of 60 cm, how many such tiles do you need?

Reference answer 64m2 = 6400 dm2 60cm = 6dm6400÷ (6× 6) ≈178 (block) A: omitted.

Check the contents of cuboids and cubes.

Question 12 Among the following figures, the one with the largest number of symmetry axes is ().

A.B. C. D。

Reference answer b

Examine the knowledge of content symmetry axis

Test 13 huanhuan height1m. There is a big toy house in the shape of a cube in the children's playground. Try to estimate the size of the big toy house as ().

8 cubic meters B. 16 cubic meters

About 27 cubic meters deep, 64 cubic meters.

Reference answer a.8m3

Application of volume calculation method of content cube.

The side length of the problem 14 cube is 2 cm. Expand its side length to three times, and now the surface area of this cube is () square centimeters.

Now the surface area of this square is (2 16) square centimeters.

Flexible application of calculation method of cubic surface area

Fourth, solve the problem.

Test 15 Five pieces of glass (unit: cm) were glued to the right to form a uncovered goldfish bowl. Calculate how many liters of water can this goldfish bowl hold at most?

The reference answer is 70×30×50= 105000 cubic centimeters = 105L.

Check the volume of the content box.

Kao 16 workers built a road. On the first day, it was completed in full length, and on the second day, it was more than the first day. What percentage of all-rounders have been trained in two days? How many parts need to be repaired?

Reference answer += 1- =

Test content score addition and subtraction