Class _ _ _ _ _ _ _ Name _ _ _ _ _ _ Score _ _ _ _ _ _ _ _ _
1. Fill in the blanks: (22 points)
(1) 4.05 cubic meters = () liters; 135 hours = () hours () minutes
(2) The parallelogram has a certain area, and its base and height are directly proportional to ().
(3)1.2: the ratio of 0.75 to the simplest integer is (), and the ratio is ().
(4) If A× 14 =B× 13, then A:B= (): ()
5] In a proportion, two external terms are reciprocal, one is 20 and the other is ().
[6] The ratio of A number to B number is 5:7, and A number is ()% more than B number.
Once the volume of a cone is 18 cubic meter, the volume of a cylinder with equal bottom and equal height is ().
The sum of the sides of a cube is12cm, its surface area is (), and its volume is ().
(9) Two cylinders and cones with equal bottoms and equal heights, the sum of their volumes is 24 cubic centimeters, and the volume of the cone is () cubic centimeters.
(10) On the map, the actual distance of 100 km is represented by a 20 cm long line segment. The scale of this map is ().
(1 1) if 3a=4b, then a:b= (): (), if x=35 y, then x:y= (): ().
(12) Judge whether the following two quantities are directly proportional, inversely proportional or not.
(1) The circumference and radius of a circle. ( )
② The area and radius of the circle. ( )
③ The perimeter and side length of a square. ( )
(4) The side area of the cylinder is constant, and the height of the cylinder and the radius of the bottom surface are constant. ( )
⑤ Natural numbers and their reciprocal. ( )
6. A certain scale, the distance on the map and the actual distance ()
(13) Statistical charts commonly used in daily life are (), () and ().
2. Judgment: (6 points)
(1) cut a cylinder into the largest cone, and the volume of the cone is half of the cut part. ( )
② A cylinder has countless heights, while a cone has only one height. ( )
(3) If two related quantities are not directly proportional, they are inversely proportional. ( )
④ Bar chart can clearly see the change of quantity. ( )
⑤ The former term of the ratio is definite, and the latter term is inversely proportional to the ratio. ( )
⑥ It is most appropriate to use histogram to reflect the temperature change in a week. ( )
Three. Choose the correct answer number to fill in the blanks: (4 points)
(1) At least () identical small cubes can be used to form a larger cube.
①2 ②4 ③6 ④8
(2) If you want to make the altitude of the five famous peaks in China ◆ Please remember the website: www.lspjy.com next visit! This site will provide you with more free teaching resources for primary and secondary schools! /showtopic-45755.aspx statistical chart, which statistical chart do you think is suitable? ( )
① Bar chart ② Line chart ③ Fan chart
(3) The volume ratio of a cylinder and a cone with equal bottoms is 1: 2, the height of the cone is 9 cm, and the height of the cylinder is () cm.
①3 ②6 ③ 18 ④24
(4) The ratio formula of 6, 8, 9, 12 can be ().
①6:8=9: 12 ②8:6= 12:9 ③ 12:6=9:8
Fourth, calculation
1, direct write times: (4 points)
14 + 15 = 1-6 1 1 = 1÷67 = 12 - 13 =
12 ×45 = 0÷35 = 0.9+99×0.9= (56 + 14 )× 12=
2. Find the unknown X: (12 points)
X+ 16x = 7 80×34- 14x = 1658:X = 34:6 1- 14x = 343。 Informal calculation. (Simplification that can be simplified) (15 points)
29+ 12 ÷ 45+38 8 13 ÷ 7+ 17 × 6 13 2-6 13 ÷ 926-23 125 × (56+
(1) The difference between 7 times a number and 34 is 14. Find this number.
(2) 12 plus a number 67, and the sum is 18. What is this number?
V. Application Problems (3 1 min)
① The school saves water 14.7 tons in the first three days of this week, and saves water10.2 tons every day in the last four days. How many tons of water have been saved every day this week? ② A conference room needs 540 square bricks with an area of 16 square decimeter. If the ground is paved with square bricks with a side length of 6 meters, how many pieces are needed? (Solve with the knowledge of proportion) ③ Paving the floor with the same bricks requires 6 18 bricks to pave18 square meters. If the floor is 24 square meters, how many bricks will be used? ④ On the map with the scale of 1:500000, the distance between the two places is 3.4 cm. What is the actual distance between the two places? ⑤ A conical sand pile with a height of 1.8m and a bottom radius of 5m weighs about 1.7 tons per cubic meter of sand. How many tons does this pile of sand weigh? (Keep the whole ton) 6 cylindrical barrels without cover. The height is 24 cm and the bottom diameter is 20 cm. How many square centimeters does it take to make this bucket? (Keep the whole hundred square centimeters)
How many milliliters of water can this barrel hold? (Numbers are reserved as integers)