1, hundreds and percentiles are all 5, and the rest digits are all 0. This number is written as () and pronounced as (), and there is () 0.0 1 in this number.

2. Fill in the appropriate decimals in the brackets.

8.5 cents = () yuan 1 kg 45g = () kg.

12m 5 decimeter = () m 15 decimeter 2= () m2

3. Compare sizes.

0.75○0.8 5.6÷0.9○5.6 7.82○7.82×0.6

4. If the decimal point of 95.2 is moved two places to the left, it will be restored to the original (), and 2.008 will be expanded to the original () times, twice as much as that of 2008.

5. The base angle of an isosceles triangle is 50 degrees, and the top angle is () degrees.

6. How many pages does a book have? Xiao Ming reads 25 pages every day for B days, and there are () pages left. When a=350 and b=5, there are () pages left to read.

7.5÷ 1 1 The simple notation of commercial cyclic decimals is (), and the three decimal places are ().

8. Two decimal places, 5.0 after retaining one decimal place. The minimum value of these two decimal places is ().

9. Ranked 2.65, 2.56, 2.065 and 2.605 from small to large, and the second is ().

10, 10 tons of seawater can dry out 0.85 tons of salt. According to this calculation, 50 tons of seawater can produce () tons of salt, and it takes () tons of seawater to produce 1.7 tons of salt.

1 1. When Xiao Mahu divides 12.6 by a number, because the decimal point of the divisor is wrong to the left, the result is 2 1. If you are smart, you must know that the correct answer to this question is ().

12, 200kg oil is packed in a 4.5kg oil tank, which can fill () oil tanks, leaving () kg oil.

Second, the judgment (each question 1 point, *** 10 point)

1, if 3x+a=9, then x+a=9÷3. ( )

2, 1.76□≈ 1.76, and the maximum value in □ is 5. ( )

The highest rank of the quotient of 3.76÷38 is the tenth rank. ( )

4. A 5-meter-long steel weighs 4 kilograms, and the weight per meter is 1.25 kilograms. ( )

Figure 6

5. If n represents a natural number greater than 0, the singular number can be represented as 2n- 1. ( )

6. In the picture on the right, * * has 9 parallelograms, 7 trapezoids and 3 triangles. ( )

7. A triangle with only two acute angles must be an obtuse triangle. ( )

8. Three sticks of 3 cm, 4 cm and 7 cm can form a triangle. ( )

The leftmost 4 in 9.0.424 indicates four 0. 1, and the rightmost 4 indicates four 0.0 1. ( )

10. There are 6 white balls, 3 red balls and 3 black balls in the box. The chances of touching the red ball and the black ball are equal. ( )

Third, choose carefully, I am the best. (Each question 1 point, * * *1point)

1, in the following figures, the size remains unchanged after removing 0: ()

a、8.05 B、0.090 C、600 D、2 1.00

2. Among the following formulas, only () is an equation:

a、4a+8 B、6 B- 9 & gt； 12 C、3-x+5 D、a÷2=4

3. First move the decimal point of a decimal to the right, and then move it to the left by three places, the original number ().

A, expand 10 times b, shrink 10 times c, shrink 100 times d, expand 100 times.

4. The picture below () is what Binbin saw.

A, B, C,

5, smile and naughty play "scissors, stone, cloth" game, the following statement is correct ().

First, the game is unfair. B, it is more likely to be distributed. C, smile will definitely win D, naughty may win.

It took three minutes to saw a piece of wood into three sections. It will take () minutes if this piece of wood is sawed into five sections.

a、5 B、6 C、7.5 D、9

7. The number closest to 10 among the following decimals is ().

a、 10.0 1 B、9.998 C、9.9 D、 10. 1

8. As shown in the figure, ... it takes () sticks to place n hexagons.

a、6n B、6n+ 1 C、6n- 1 D、5n+ 1

9. The bracket nailed with wood in the following picture is the most easily deformed ().

A, B, C, D,

10, two identical triangles, may spell ()

A, rectangle b, square c, parallelogram d, the first three can do.

Fourth, I will calculate:

1. Write directly. (0.5 points for each question, ***6 points)

0.5× 1.6= 23+4.7= 10-2.3= 0.06×0.7= 100÷40= 3.5÷5=

7.5×4= 4.04÷4= 0.34+ 1.9= 13.4-8= 2.3×0= 3.2÷0.8=

2. Use vertical calculation and use★ to check. (2+2+3=7 points)

4.85×0.73= 25.73÷8.3= ★56.7÷0. 14=

The fourth grade mathematics final comprehensive volume of the next semester (2)

3. Solving equations: (2 points for each question, ***6 points)

4y-24 = 16 2.5x÷6 = 2.5 3X+2.4X = 10.8

4. Calculate by recursive equation: (12 points)

8.5×5.67-7.5×5.67 70.8- 1.25- 1.75 10 1×4.8

4.5- 1. 14÷ 1.5- 1.24 56× 12.5 1.6×[( 1.8+ 1.95)÷2.5]

Five, the operation problem (3 points)

Draw a picture on the bitmap as required, and then draw a stroke to make the picture form a triangle and a trapezoid.

parallelogram

isosceles trapezoid

right triangle

Sixth, solve the problem. (3 points are 1, 2 and 3, 4 points are 4, 5 and 6 ***2 1 minute)

1、

2. Thirty-four students from Grade Four (1) took a group photo. The price is 24.5 yuan, and four photos are presented. In addition, 1 photo will be charged 2.3 yuan for each additional print. If everyone in the class wants 1 photo, how much is a * * *?

3. In 2006, Uncle Zhang went to the bank and converted RMB into USD 5,000 (RMB 8.25 into USD 1). This year, he wants to change these dollars into RMB (6.86 RMB 1 USD). How much did he lose excluding interest?

4. Go to Rainbow Shopping Mall for promotional activities, and buy a box (24 boxes) of milk for 45.6 yuan, and a dozen (8 boxes) of milk from Limin Shopping Mall of the same brand 18 yuan. Which shopping mall has cheaper milk?

Xiaohong and her mother add up to 45 years old. Her mother is eight times as old as Xiaohong. How old are her mother and Xiaohong? (Equation solving)

6. There are 275 students in Grade One of a school, less than Grade Two 19. How many students are there in Grade One and Grade Two? (Equation solving)