2009-2010 Answers to the final test paper for the fourth grade of primary school Chinese language volume 2

1. Please do the math orally. (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+0.6=4.1 5-0.15= 4.35+5.36= 99×66+66=

0.81+0.09= 0÷78 = 50－20÷5= 35×25×4=

2. Please use the recursive equation to calculate. (12')

72-3×8÷6 3600÷(20-5) (4527) ÷(21-18)

86.7-(14.3-3.8) 60- (12.87+0.75) 95.6-(26.3-8.3)

3. Can you think of a simple way to calculate the following questions? (12')

25×5+74×5+5 6.74+12.62+24.38+3.26

87-2.123-0.877 30.65-(7.65+5.4)

(48)×125 32×38+32×62

4. Please fill in the form. (13’)

1. The distributive law of multiplication is represented by letters ( ).

2. There are ( ) 0.01 in 0.28, and 1 yuan, 2 jiao and 4 cents written as a decimal is ( ) yuan.

3. A 160-degree angle is ( ) degrees less than a straight angle.

4. Expand 0.36 to 100 times and move the decimal point one place to the left to get ( ).

5. 9.0968 is ( ) with one decimal place, ( ) with two decimal places, and ( ) with an integer.

6. In a right triangle, one acute angle is 550 and the other acute angle is ( ).

7. Tintin and Dongdong made a square array with toy figures, 13 on each side of the outermost layer. There are ( ) toy figures in the outermost layer, and ( ) toy figures in the entire square array.

8. According to the sum of the interior angles of a triangle is 180°, find the sum of the interior angles of the following two figures.

Trapezoid ( ) degree, pentagon ( ) degree.

5. Choose one of the three (please write the number of the correct answer in brackets). (10’)

1. Simplifying the decimal 20.090 is ( ).

A, 20.9 B, 20.09 C, 2.9

2, 4.03 expanded to 100 times is ().

A, 0.043 B, 403 C, 40.3

3. Two ( ) triangles can be combined into a parallelogram.

A. Equal bases and equal heights B. Equal areas C. Exactly the same

4. 0.72 is equal to ( ).

A, 0.720 B, 7.2 C, 721000

5, 80.614 is read as ( ).

A. Eighty point six hundred and fourteen B. Eighty point six hundred and fourteen

C. Eighty point six hundred and fourteen

6. Please You make a decision (mark "√" if it's right, "×" if it's wrong.) (8')

1. Add "0" or remove "0" from the end of the decimal. The size of the decimal does not matter. Change. ( )

2. Use three small wooden sticks with lengths of 13 cm, 20 cm and 6 cm respectively and connect them head to tail. You will be able to form a triangle.

( )

3. The counting units of 0.26 and 0.260 are different. ( )

4. A straight line is a straight angle. ( )

7. Compare the size, fill in "<", ">" and "=" in ○. (9')

2051000 ○2.05 0.7○7100 8.75 kg○875 g

0.99○1 0.12○0.120 200 hectares○2 square kilometers

4.205 ○4.204 0.61○1.06 79000○79,000

8. According to the little girl’s description, mark the location of each building on the floor plan. (8’)

9. The average number of computers owned by every 100 residents in Baihua Community from 2002 to 2006 is as follows. (8’)

1. The average number of units owned by every 100 residents in Baihua Community increased by ( ) from 2002 to 2006.

2. From ( ) to ( ), the average number of computer ownership increased the smallest. The average computer ownership increased the most from ( ) to ( ).

3. Based on the information on the chart, can you predict that the average number of computers per 100 people in Baihua Community in 2007 will be approximately ( )

.

10. Solving Problems (12')

In the first semester of the 2006 school year, the students in Class 4E donated all the money they earned from selling scraps to Project Hope. The details are as follows :

Name Waste paper cans and plastic bottles

Income (yuan) 47.75 25.2 68.4

1. Class 4E makes more money selling waste paper than plastic bottles How many yuan less?

2. How much more did Class 4E make from selling waste paper and disposable cans than plastic bottles?

3. How much money did *** from Class 4E donate to Project Hope?

Primary School Mathematics (People's Education Press Edition) Fourth Grade Final Test Paper

(Time: 60 minutes)

Class Name Score

1. Please do the math orally. (8')

0.38+0.06=0.44 (155+20)-65=110 64.2+5.7=69.9 543-27-73=443

0.97-0.09=0.88 12.8 -9.86=2.94 17.05-4.58 =12.47 9800÷25÷4=98

3.5+0.6=4.1 5-0.15=4.85 4.35+5.36=9.71 99×66+66=660

< p>0.81+0.09=0.9 0÷78=0 50-20÷5=46 35×25×4=3500

2. Please use the recursive equation to calculate.

(12')

72－3×8÷6 3600÷（20－5） (450＋27) ÷(21－18)

=72－24÷6 =3600÷ 15 =477÷3

=72-4 =240 =159

=68

86.7-(14.3-3.8) 60-(12.87+0.75) 95.6-(26.3-8.3)

=86.7-10.5 =60-13.62 =95.6-18

=76.2 =46.38 =77.6

3. Can you Can you think of an easy way to calculate each of the following questions? (12')

25×5+74×5+5 6.74+12.62+24.38+3.26

=(25＋74+1)×5 =(6.74+3.26)+(12.62 +24.38)

=100×5 =137

=500 =47

87-2.123-0.877 30.65-(7.65+5.4)

=87－(2.123＋0.877) =30.65－7.65－5.4

=87－3 =23－5.4

=84 =17.6

< p>(48)×125 32×38+32×62

=40×125+8×125 =32×(38+62)

=501000 =32×100

p>

=6000 =3200

4. Please fill in the form. (13’)

1. The distributive law of multiplication represented by letters is ((a+b)×c=a×c+b×c).

2. There are (28) 0.01s in 0.28, and 1 yuan, 2 jiao and 4 cents written as a decimal is (1.24) yuan.

3. A 160-degree angle is (20) degrees less than a straight angle.

4. Expand 0.36 to 100 times and move the decimal point one place to the left to get (3.6).

5. 9.0968 with one decimal place is (9.1), with two decimal places it is (9.10), and with an integer it is (9).

6. In a right triangle, one acute angle is 550 and the other acute angle is (35).

7. Tintin and Dongdong made a square array with toy figures, 13 on each side of the outermost layer. There are (48) toy figurines in the outermost square, and there are (169) toy figurines in the entire square square.

8. According to the sum of the interior angles of a triangle is 180°, find the sum of the interior angles of the following two figures.

Trapezoid (360) degrees, pentagon (540) degrees.

5. Choose one of the three (please write the number of the correct answer in brackets). (10’)

1. Simplifying the decimal 20.090 is (B).

A, 20.9 B, 20.09 C, 2.9

2, 4.03 expanded to 100 times is (B).

A, 0.043 B, 403 C, 40.3

3. Two (C) triangles can be combined into a parallelogram.

A. Equal bases and equal heights B. Equal areas C. Exactly the same

4. 0.72 is equal to (A).

A, 0.720 B, 7.2 C, 721000

5, 80.614 is read as (C).

A. Eighty point six hundred and fourteen B. Eighty point six hundred and fourteen

C. Eighty point six hundred and fourteen

6. Please You make a decision (mark "√" if it's right, "×" if it's wrong.) (8')

1. Add "0" or remove "0" from the end of the decimal. The size of the decimal does not matter. Change. (√)

2. Use three small wooden sticks with lengths of 13 cm, 20 cm and 6 cm respectively and connect them head to tail. You will definitely

be able to form a triangle. (×)

3. The counting units of 0.26 and 0.260 are different. (√)

4. A straight line is a right angle. (×)

7. Compare the size, fill in "<", ">" and "=" in ○. (9')

2051000 <2.05 0.7>7100 8.75 kg>875 g

0.99<1 0.12＝0.120 200 hectares=2 square kilometers

4.205 ＞4.204 0.61＜1.06 79000＝79,000

8. According to the little girl’s description, mark the location of each building on the floor plan. (8')

Name of waste paper cans and plastic bottles

Income (yuan) 47.75 25.2 68.4

9. Every year of Baihua Community from 2002 to 2006 The average number of computers owned by 100 households is as shown below. (8’)

1. The average number of units owned by every 100 residents in Baihua Community increased by (65) from 2002 to 2006.

2. From 2002 to 2003, the average number of computer ownership increased at the smallest rate. The average computer ownership increased the most from 2005 to 2006.

3. Based on the information on the chart, can you predict that the average number of computers per 100 people in Baihua Community in 2007 will be approximately (117)

. (The answer to this question is acceptable as long as it is ≥117 units)

10. Solve the problem (12')

In the first semester of the 2006 school year, the students in Class 4E used the money they earned from selling scrap products All the money was donated to Project Hope. The details are as follows:

1. How much less did Class 4E make from selling waste paper than plastic bottles?

68.4-47.75=20.65 (yuan)

Answer: Class 4E earns 20.65 yuan less from selling waste paper than plastic bottles.

2. How much more did Class 4E make from selling waste paper and disposable cans than plastic bottles?

(47.75+25.2)-68.4=4.55 (yuan)

Answer: The total money of Class 4E from selling waste paper and disposable cans is 4.55 yuan more than that of plastic bottles.

3. How much money did *** from Class 4E donate to Project Hope?

47.75+25.2+68.4=141.35 (yuan)

Answer: Four E