First, please calculate. (8')0.38+0.06=0.44( 155+20) -65 = 64.2+5.7 = 543-27-73 = 0.97-0.09 = 0.86 12.8-9.86 = 17.05-4.58 = 9800 ÷ 25 ÷ 4 = 3.5 ( / kloc-0/2') 72-3× 8 ÷ 63600 ÷ (20-5) (450+27) ÷ (2 1- 18) 86.7-( 14.3) ( 12') 25× 5+74× 5+56.74+ 1 2.62+24.38+3.2687-2.123-0.87730.65-(7.65+5.4). (13')1. 2.0.28 has () 0.0 1, 1 yuan 2.4 points, and the decimal is () yuan. 3. The angle of160 degrees is smaller than the right angle by () degrees. 4. Expand by 0.36 to 100 times, and move the decimal point to the left by one place. 5.9.0968 One decimal place is (), two decimal places are (), and the integer is (). 6. In a right triangle, one acute angle is 550 and the other acute angle is (). 7. Tintin and Dongdong set up a square with toy figures, with 13 on both sides of the outermost layer. There are () toy people in the outermost layer, and there are () toy people in the whole square. 8. According to the fact that the sum of the internal angles of the triangle is 180, find the sum of the internal angles of the following two figures. Trapezoidal () degree, pentagonal () degree. Choose one of five or three (please write the serial number of the correct answer in brackets). (10') 1 .decimal 20.090 is simplified as (). A, 20.9B, 20.09C, 2.92 and 4.03 are expanded to 100 times (). A, 0.043B, 403C, 40.33, two () triangles can form a parallelogram. A, equal bottom, equal height B, equal area C, exactly the same 4, 0.72 equals (). A, 0.720B, 7.2C, 72 10005, 80.6 14 is pronounced as (). A, 80: 6 14b, 80: 6 14c, 80: 6 146, please make a judgment (mark "√" for the right and "×" for the wrong). ) (8') 1, add "0" or remove "0" after the decimal point, and the size of the decimal point remains unchanged. () 2. A triangle can be formed by connecting three small wooden sticks with lengths of 13cm, 20cm and 6cm end to end. () 3, 0.26 and 0.260 have different counting units. The straight line is a right angle. () 7. Compare the dimensions and put "=" in ○. (9') 205100002.050.7 9675438+0008.75kg 0875g 0.99 9675438+00.120200 hectares 02 square kilometers 04.205. (8') Nine. From 2002 to 2006, the average number of computers owned by each household in Baihua Community is as follows. (8') 1. From 2002 to 2006, the average number of households in Baihua Community increased by (). 2. From () to (), the average computer ownership increased the least. The average number of computers has increased from () to (). According to the information in the picture, you can predict that the average number of computers per 100 people in Baihua Community in 2007 is about (). X. Solving Problems (12') In the first semester of the 2006 school year, the students in Class E donated all the money from selling waste products to Project Hope. The details are as follows: the income of waste paper cans and plastic bottles (RMB) 47. 7580005 2. How much is the money for selling waste paper and trash cans more than that for selling plastic bottles? 3. How much did Class One * * of Class Four E donate to Hope Project? Primary School Mathematics (People's Education Edition) Grade Four Volume II Final Examination Paper (Time: 60 minutes) Class Name Score 1. Please do the math orally. (8')0.38+0.06=0.44( 155+20) -65= 1 1064.2+5.7=69.9543-27-73=4430.97-0.09=0.88 12.8-9.86=2.94 17.05-4.58= 1 2.479800 ÷ 25 ÷ 4 = 983.5+0.6 = 4.15-0.15 = 4.854.35+5.36 = 9.7199× 66+. ( 12 ')72-3×8÷63600÷(20-5)(450+27)÷(2 1- 18)= 72-24÷6 = 3600÷ 15 = 477÷3 = 72-4 = 240 = 159 = 6886.7-( 1 4( 12')25×5+74×5+56.74+ 12.62+24.38+3.26=(25+74+ 1)×5=(6.74+3.26)+( 12.62+24.38) = 100×5= 1 0+37=500=4787-2. 123-0.87730.65-(7.65+5.4)=87-(2. 123+0.877) = 30.65-7.65-5.4 = 87-3 = 23-5.4 = 84 = 17.6 (40+8) × 1 2532× 38+32× 62 = 40×125+8 (13')1.The multiplication distribution law expressed by letters is ((a+b) × c = a× c+b× c). 2.0.28 has (28) 0.0 1. 1 yuan 2.4 points, and the decimal is (1.24) yuan. 3. The angle of160 degrees is (20) degrees smaller than the right angle. 4. Expand it by 0.36 to 100 times, and move the decimal point one place to the left, which is (3.6). 5.9.0968 The reserved decimal place is (9. 1), the reserved decimal place is (9. 10) and the reserved integer is (9). 6. In a right triangle, one acute angle is 550 and the other acute angle is (35). 7. Tintin and Dongdong set up a square with toy figures, with 13 on both sides of the outermost layer. There are (48) toy figures on the outermost layer and (169) toy figures on the whole square. 8. According to the fact that the sum of the internal angles of the triangle is 180, find the sum of the internal angles of the following two figures. Trapezoidal (360) degrees, pentagonal (540) degrees. Choose one of five or three (please write the serial number of the correct answer in brackets). (10') 1 .decimal 20.090 is simplified as (b). A, 20.9B, 20.09C, 2.92 and 4.03 are expanded to 100 times, which is (b). A, 0.043B, 403C, 40.33, two triangles (c) can form a parallelogram. A, equal bottom, equal height B, equal area C, exactly the same 4, 0.72 equals (a). A, 0.720B, 7.2C, 72 10005, 80.6 14 is pronounced as (c). A, 80: 6 14b, 80: 6 14c, 80: 6 146, please make a judgment (mark "√" for the right and "×" for the wrong). ) (8') 1, add "0" or remove "0" after the decimal point, and the size of the decimal point remains unchanged. (√)2. A triangle can be formed by connecting three small wooden sticks with lengths of 13cm, 20cm and 6cm end to end. The counting units of (×)3, 0.26 and 0.260 are different. (√)4. The straight line is a right angle. (x) seven. Please refer to ○ (9') 2051000 71008.75kg > 875g 0.99 <10.12 = 0. (8') Income from waste paper, plastic bottles and cans (RMB) 47.7525.268.4 IX. From 2002 to 2006, the average computer ownership per 100 households in Baihua Community is shown in the following table. (8') 1. From 2002 to 2006, the average number of households in Baihua Community increased by 65. 2. From (2002) to (2003), the average computer ownership increased the least. From 2005 to 2006, the average computer ownership increased the most. According to the information in the picture, you can predict that the average number of computers per 100 people in Baihua Community in 2007 is about (1 17). (As long as the answer to this question is ≥ 1 17) X. Solving the problem (12') In the first semester of the 2006 school year, the students in Class E donated all the money for selling waste products to Project Hope. The details are as follows: 1 How much less is the money for selling waste paper than for selling plastic bottles? 68.4-47.75 = 20.65 yuan (yuan) A:E The money for selling waste paper is 20.65 yuan less than that for selling plastic bottles. 2. How much more does Class E spend on selling waste paper and trash cans than on selling plastic bottles? (47.75+25.2)-68.4 = 4.55 yuan 1. Do the math. (42 points) 1, write directly. (10) 270 ÷ 9 = 620+60 =18× 5 = 84 ÷ 4 = 530+470 = 72 ÷18 = 60 ÷/kloc- 2 points) 560+40-30×15 [296+(84-12) ]× 517× (35+480 ÷ 6) 270 ÷ [65438]. Second, fill in. (20 points) 1, and the three formulas of100 ÷ 25 = 4,6+4 =10, 12× 10= 120 are combined into a synthesis. 2. If the formula 852+ 152÷ 19×8 is changed to calculate division first, then addition and finally multiplication, then the formula should be (). 3. Fill in ""or "=" in ○. (1) 5+25× 20 (5+25 )× 2 (2) 20+12+60 ÷ 3 020+(12+60) ÷ 3 (3) 96 ÷. Master Wang sawed a piece of wood into 5 sections in 4 minutes. Now it takes () minutes to saw it into 10 segments. 6. The sum of dividend, divisor, quotient and remainder is 143. If the quotient is known to be 3, the remainder is 20, the dividend is () and the divisor is (). Third, choose one. (Fill in the serial number of the correct answer in brackets, 8 points) 1, expand one factor by 10 times, and ask another factor () to keep the product unchanged. (1) Enlarge 10 times (2) Reduce 10 times (3) Invariant 2. The formula for the last step of division is (). (1) 90-25× 4 ÷ 2 (2) (90-25 )× 4 ÷ 2 (3) 90-[25× (4 ÷ 2)] 3, (60+40 ÷ 2) × 2. (1) For formulas with brackets, what is in brackets should be calculated first, and what is in brackets should be calculated later. (2) In the mixed operation with only addition and subtraction, it should be calculated from left to right. (3) Calculate the operation order of 200-98 ÷ 7× 4 from left to right. Fourth, solve the problem. (30 points) 1. The school canteen went to Baiyunting vegetable wholesale market to buy some vegetables and radishes, as shown in the following table: How much is a basket? How many kilograms are these vegetables? 20 18 radish? 30 10 q: how much are these vegetables? 2. There are 120 girls in the fourth grade of Banqiao Primary School, and there are 105 boys. How many students are there in the fourth grade? Fill a cup with 250ml of water, and then pour it into a bucket. I didn't fill it 24 times. What is the minimum capacity of this bucket? A classroom is 8 meters long and 6 meters wide. How many square bricks does it take to pave the floor with a square brick with a side length of 4 meters? There are 720 books on the double shelves. If you take out 20 books from the lower level to the upper level, there are as many books on the two levels. How many books are there on each floor? Fifth, brain paradise. (Add 10) 1, and skillfully fill in "+,-,×, degree, ()" to make the equation hold. 4444 =14444 = 54444 = 24444 = 94444 = 34444 =152. Parentheses make the following formula hold. 6×8+ 12÷4- 1=526×8+ 12÷4- 1= 14