Beijing normal university printing plate fourth grade second volume mathematics final examination paper

Basic questions (10 topic is reaching the standard)

First, write directly. (4: 1)

0. 15+0.5= 0.2? 0. 1= 1.8? 6= 1-0.23= 2.5? 4= 6? 5= 20? 0.5= 0.39? 3= 1.05? 5= 2. 16+3.84=

4.8? 1.6= 10-4.3=

Fill in the blanks. (2: 1)

1)0.4 includes () 0.1; 0.025 contains () 0.00 1.

2) The sum of the largest single digit and the smallest decimal digit is (), the difference is (), and the product is ().

3) When150g = () kg for 42 minutes = ()

1 m 5 cm = () m

4)320? The commercial rounding method of 33 reserves two decimal places, which is about ().

5) Arrange the following figures in order.

1.72、2.072、 1.702、 1.7265438()& lt； ()& lt()& lt( )

6) What triangles are blocked by the envelope? Write their names on the envelope.

7) The two internal angles of the triangle are 92 degrees and 44 degrees respectively, and the third internal angle is () degrees. This triangle is an angle triangle according to the angle (); Displays a triangle with an edge of ().

Third, calculate the following problems, and simplify what can be simplified. ( 1: 1)

1) 12.7+ 12.5+0.5 2)2.5? 4.6? 0.4? 0.3 3)0.4? 99+0.4

Fourth, solve the problem. ( 1: 1)

1) A butterfly flies 3.9 kilometers at a speed of 0.5, and the flying speed of bees is 2.4 times that of butterflies. How many kilometers do bees fly per hour?

2) There are two barrels of oil, one of which is 2.5 kilograms, and the price is 35.00 yuan; B 3kg barrel (0.5 kg of the same oil), the price is 48.30 yuan. What kind of oil is cheaper?

3) Students play guessing games. Xiaoling said: the number I want multiplied by 9 plus 6. 15 equals 15.87. ? Do you know what Xiaoling is thinking? (solved by equation method)

Skill problem (do 8 questions well)

Fill in the blanks. (2: 1)

1) Moves the decimal point of a decimal to the right by one place, which is 25.2 more than the original. So this decimal point is ().

2) After rounding, a three-digit decimal is about 2. 10. The smallest decimal is () and the largest decimal is ().

3)□0.□7 Please fill in the numbers in □ to meet the following requirements respectively.

(1) Maximize this number. () (2) Make this number closest to 3 1. ( )

4) Choose three sticks with the length of 1.5cm, 2cm, 3.5cm and 4cm to form a triangle, and the sides of this triangle may be (), () and ().

Choose the letter of the correct answer and fill in the brackets. (2: 1)

1) has () decimals greater than 3.5 and less than 3.7.

A, 0 B, 1 C, 9 D, countless

2) If the lengths of two sides of a triangle are 5cm and 8cm respectively, the length range of the third side should be ().

A, 3cm above b, 13cm above

C, more than 3cm and less than 13cm d, less than 3cm or more than 13cm.

3) The product of two numbers is 0.42. If two numbers are simultaneously expanded by 10 times, the product is ().

a、42 B、4.2 C、0.42 D、0.0042

4) A steel pipe is 3.8 meters long and sawed into sections every 0.7 meters. How many meters are left in the steel pipe? ( )

a，30m b，3m c，0.3m d，0.03m

Third, calculate the following questions.

1.8+ 1.2? 6.5 5.4? (3.94+6.86)

9.4? [0.96? (5.4? 0.9)]

4. Xiaoming and Xiaolan play a model ball game, touching one ball at a time at random, and then putting it back, each touching 10 times. Xiao Ming who touches the white ball gets 1 point, Xiao Lan who touches the yellow ball gets 1 point, and Xiao Ming and Xiao Lan who touch other colors get no points. What kind of pocket do you think is fair to touch the ball? (fair bag) (1: 1)

Five,

Solve the problem.

Dad is seven times older than light light blue. I also know that light light blue is 30 years younger than his father. How old are Light Light Light and Dad?

2) Grandma Wang bought a box of 30 fruit popsicles in the cold drink wholesale department.

22.5 yuan; A box of 20 cream popsicles, *** 17.2 yuan. Sell each cream popsicle 1.5 yuan each fruit popsicle.

1.2 yuan. Which kind of popsicle is cheaper at wholesale price? How much did a * * * earn after selling a box of two kinds of popsicles?

Ability problem (do it right

1 titled Excellent)

1, find a pattern to fill in the blanks.

(1) It takes () sticks to swing a triangle;

(2) waving a stick;

(3) use () sticks;

(4) pendulum

Use () a stick;

(5) It takes () sticks to put 15 down like this;

(6) In this way, 99 sticks are put with a * * *, * * and so on.

2. Fill the grid with nine numbers of 1-9, and we find that the sum of three numbers in each row is 15, such as: 8+ 1+6= 15, 3+5+7= 15, 4+9+. The sum of three numbers in each column is also 15, such as: 8+3+4= 15, 1+5+9= 15, 6+7+2 =15; The sum of three numbers on two diagonal lines is also 15: 4+5+6 = 15, 8+5+2= 15. The other nine numbers also have the same characteristics as the figure 1. It is known that a=4, d= 19 and k=22. So, how much do B and H stand for?