20 17 Next semester's fifth grade math final examination paper (with answers)

20 17 Next semester's fifth grade math final examination paper (with answers) 1. Fill in the blanks. (per grid 1 min, ***3 1 min)

1, the minute hand of the clock turns clockwise () from 9 to12; From 7 to 1 1, rotate clockwise (); Starting from 6, turn 120 to () clockwise.

2. Within 10, the number that is both odd and composite is (), and the number that is both even and prime is (). The factor of 28 is (). The sum of all prime numbers within 20 is ().

3. It is known that a=2×2×3×5, b=2×5×7, the least common multiple of A and B is (), and their greatest common divisor is ().

4. Make a rectangular frame with a length of 0.4 meters and a width of 0.3 meters with a wire of 3.6 meters. The height of this frame is ().

5. There are () false scores with a numerator of 7, the smallest of which is ().

6, print a manuscript, a typist 15 hours can be completed, then 5 hours to complete the manuscript (), and this manuscript ().

7. Saw a 2-meter-long wood into five sections with the same average length, each section is () of this wood, and each section is () meters long.

8. Compared with, () has a larger fractional value and () has a larger fractional unit.

9, a fraction, the numerator is smaller than the denominator 10, which is equal to the divisor. This score is (). The plus sign () equals the smallest prime number.

The mode of 10 and a set of data 1, 2, 2, 3, 4, 4, 5 is (), and the median is ().

1 1. Make a cuboid with a length of 1cm from three cubes. The volume of this cuboid is () and the surface area is ().

12,20 seconds = () minutes 3.85 cubic meters = () cubic decimeter 4 liters 40 ml = () liters.

13, ← Fill in decimals.

Second, choose. (65438+ 0 points for each question, ***5 points)

Of the natural numbers within 1 and 50, the product of the smallest prime number and the largest prime number is ().

( 1)98 (2)94 (3)47 (4)49

2. A cuboid of wood is 2m long, 2m wide and 2m high. Sawing it into three parts will increase the surface area of at least () square decimeter.

( 1)8 (2) 16 (3)24 (4) 12

3. If it is the simplest true score, then X should be ().

A, 1 B, 0 or 2 C, 3

(1) 1 (2) A number (3) B number (4) Product of A number and B number

4. The circumference of the bottom of the cube is 12cm, and the volume is () cm3.

( 1)9 (2)27 (3)36 (4)72

5. The product of two prime numbers must be ().

(1) odd number (2) even number (3) composite number (4) prime number

Third, the judgment (65438+ 0 points for each question, ***8 points)

1, 36 is a multiple and 9 is a factor. ( )

2. Besides prime numbers, natural numbers are also composite numbers. ( )

3. The side length is a non-zero natural number, and the perimeter must be a square with a composite number. ( )

4. The side length of the cube is expanded by 3 times, and the volume is expanded by 9 times. ( )

5,25 minutes = hours. ( )

6. The greater the denominator of a fraction, the smaller the fractional unit. ( )

7. Add 20g of salt to100g of water. At this time, salt accounts for salt water. ( )

8. The sum of two prime numbers must be even. ( )

Fourth, calculation.

1. Write directly. (65438+ 0 points for each question, ***8 points)

2. calculation. (2 points for each question, *** 10)

- + +( + ) 7-( - )

5 - - + +

3. Solve the equation. (2 points for each question, ***6 points)

4, only formulas or equations, no calculation. (65438+ 0 point for each question, ***2 points)

(1) Subtract the sum, what is the difference?

(2) 2.5 times a number is 2.8 less than 12.72. What's this number?

Verb (abbreviation of verb) comprehensive utilization (per space 1 minute, ***5 points)

Fill in the blanks and answer the questions according to the table below.

1, the monthly coal consumption () of the two workshops is the biggest difference. () The monthly coal consumption is equal.

2. The coal consumption of the second workshop in recent five months showed a trend of ().

In March and April, the coal consumption of workshop 1 was () () of workshop 2.

4. The coal consumption of the second workshop in March accounts for as much as () () of its total coal consumption in these five months.

Sixth, solve the problem. (1 4 points for 5 questions, 5 points for 6 questions, and * * * 25 points)

1. How many cubic meters does it take to dig a rectangular pool 60 meters long, 30 meters wide and 2 meters deep? If you put a layer of cement on the bottom and side of the pool, how many square meters is the plastering area?

A bundle of wires is 5 meters long. What is the remaining total length after the first use and the second use?

3. After a cuboid wood with a length of 1 m was sawed into two sections, the surface area increased by 60 square centimeters. What is the volume of this piece of wood in cubic centimeters? If the weight of wood per cubic decimeter is 1.5 kg, how many kilograms does this wood weigh?

There is a batch of coal. Several tons were used on the first day. The next day, tons were used less than the first day. How many tons of coal were used in two days?

5. There are three steel wires with lengths of 12m, 18m and 30m respectively. Now, we must cut them into small pieces of the same length, but none of them are allowed to stay. What is the longest length of each piece? How many segments can a * * * be cut into?

6. A rectangular iron sheet as shown in the figure, cut one side from each of the four corners with a length of 5cm, and then fold it up along the dotted line in the figure to weld it into a box without a cover. How much iron is used in this box? What is its volume?

20 17 answers to the final examination paper of the fifth grade mathematics subject next semester.

Fill in the blanks.

1、90 120

2、9 2 1、2、4、7、 14、28 77

3、420 10

4, 0.2 hours

5、7

6、

7、

8、

9、 1

10、