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Examination Paper of Unit 1 and Unit 2 of Grade 5 in Primary Mathematics (Part Two)
Math Unit One "Fractional Multiplication" Pass Test Paper

Da Xiang Jun Xiao Wu Yue Hong

Name score

Fill in the blanks. ★(2 points × 12=24 points)

1.4/5×6 means () or ().

20×3/4 means ().

2/5 hours = () minutes 3/8 kilograms = () grams.

1/4m2 = () square decimeter 3/5m = () decimeter.

2. A pile of sand weighs 5/ 16 tons, with 2/5 used and () tons used.

At the beginning of the new semester, students should choose a squadron leader. There were 30 people who took part in the election, 3/5 agreed with Xiaoming, 7/ 10 agreed with Xiaohong, and 5/6 agreed with Xiaodong. The one with the most votes was ().

The picture on the right is a pile of pancakes. If 3/5 of them are painted red, it will cost ○ ○.

Red () CD; If you take away five wafers, there will be a ○ ○.

Three fifths of the discs are red, so you need to color () the disc red. ○ ○ ○ ○ ○

Second, calculation. ★★★★ (40 points)

1. Write the number directly. (2 points × 10=20 points)

2/7 ×3= 4/5× 1= 3/4×2/3= 16×3/4=

2/5×2/5= 5/28× 14= 4/5×4/7=

2 - 3/7= 7/24×3/ 14= 1/6+5/6×2/5=

2. fill in ">" in the zero. "<" or "=". (2 points ×4 =8 points)

5/7×8/9 〇 5/7 5/6×4/3 〇 5/6

6/703/4×6/74m 1/50 1m 1/5

3. Column calculation. (4 points× 3 =12 points)

What is three quarters of (1)7/ 12?

(2) What is the sum of the difference between1/2 and 1/3 plus their products?

(3) What is the sum of 3/5 and 7/8 of 5/24?

Third, the application problem. ★★★★ (36 points)

1.The distance between a and b is150km. A car walked 4/5 of the whole journey. How many kilometers has it traveled?

2. The number A is 72, the number B is 65438+ 0/8 of the number A, and the number C is 2/3 of the number B. What is the number C?

There are 480 trees in the orchard, of which peach trees account for 5/8 of the total. How many peach trees are there?

4. Nanjing Yangtze River Bridge is 6800 meters long and Wuhan Yangtze River Bridge is 1/4 long. How long is Wuhan Yangtze River Bridge?

A rectangular iron plate is 6 meters long and 2/3 wide. What is the area of this iron plate?

What's the circumference?

Math Unit 2 "Cuboid (1)" passed the examination paper.

Name score

★ 1. Fill in the blanks. (30 points)

1, fill in the form. (15)

pinnacle

face

Sharp ridge

figure

figure

shape

Size relation

Number of branches

Length relation

2. A cuboid has at most () sides that are squares. ( 1)

3, put the cuboid on the desktop, you can see at most () faces. ( 1)

4. The sum of the side lengths of a cube is 84 cm, its side length is () cm, and its surface area is.

(), the surface area is (). (6 points)

5. It is known that a rectangular frame with a length of 40 cm, a width of 30 cm and a height of 20 cm needs at least () cm of iron wire. If this rectangular frame is wrapped in glossy paper, then at least () square centimeters of glossy paper is needed. (7 points)

★★★★ Second, judge. Draw √ correctly in brackets and × incorrectly. (8 points)

(1) The areas of the six faces of the cube must be equal; Every face is a square. ( )

(2) A cuboid has 6 faces, 8 sides and 12 vertices. ( )

(3) In a cuboid, when two opposite faces are square, the other four faces are equal. ( )

(4) A cuboid with equal length, width and height is a cube. ( )

★★★★ Third, choose. (12)

1, the following is the expansion diagram of the cube ().

B.C.

2. Use four equilateral cubes to form a cuboid at will, and you can put () and their bottom area ().

A. One B, two C's and countless E's are equal, and F's are not equal.

3. There is a rectangular piece of paper, which is 12 decimeter long and 7 decimeters wide. It is made high by width, and folded into a rectangular box without bottom and cover (if the length of each side of the bottom is required to be whole decimeter), and at most () can be enclosed.

1。

★★★★★ Fourth, application questions. (50 points)

1. A biscuit box is 20cm long,15cm wide and 30cm high. Now we need to put trademark paper around. What is the area of this trademark paper?

2. A rectangular pool, 20cm long,10cm wide and 2m deep, covers an area of how many square meters?

3. A classroom is 8 meters long, 6 meters wide and 3.5 meters high, and the surrounding walls are painted with lime, excluding the area of doors and windows of 20 square meters. What is the area of the painting part?

4. The glass fish tank without cover is a cube with a length of 4 meters. What is the minimum glass area needed to make this fish tank?

5. Make a cuboid with the largest surface area by using two small cuboids with the length, width and height of 4 cm, 3 cm and 2 cm respectively. What is the surface area of this largest cuboid?