The decimal unit of 1 is (), and the decimal unit like () is the smallest prime number.

2. The greatest common factor of12 and 18 is (); The least common multiple of 6 and 9 is ().

3. Divide the 3-meter-long rope into 8 sections on average, each section is () () meters long and each section is () () long.

4. Xiaohong's position in the classroom is (5,4) right. She sits in column () and row (). Xiaoli's position in the classroom is column 5, line 3, which is represented by a number pair (,).

5. Fill in the appropriate numbers in the box below, fill in the false score above the straight line, and fill in the score below.

6. If a÷b=8 is (and both A and B are not natural numbers of 0), their greatest common factor is () and their smallest common multiple is ().

7.(A is a natural number greater than 0), when A is a true fraction, when A is a false fraction, and when A is equal to 3.

8、 = =( )÷9=44÷( )

9. Fill the brackets with the simplest fraction.

35 square decimeters = () cubic meters for 45 seconds = () minutes for 250 grams = () kilograms.

10, among all factors of 20, the largest is (), and among all multiples of 15, the smallest is ().

1 1, there is a cube dice, and the numbers on six faces are 1, 2, 3, 4, 5 and 6 respectively. Throw it once

Dice, the possibility of getting a composite number is () (), and the possibility of getting an even number is () ().

Second, judge. (5 points)

1, the equation must be an equation, but the equation is not necessarily an equation. ………………………………( )

2. False scores are all less than 1. ……………………………………………………( )

3. Number pairs (4,3) and (3,4) indicate the same position. …………………………( )

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

5. Divide a wire into four sections, each section is 14m. ……………………………………( )

Third, choose. (5 points)

1. A rectangular piece of paper with a length of 24 cm and a width of 18 cm should be divided into small squares with the same size, and there is no redundancy. The smallest can be divided into ().

A. 12

2.X5 is a true fraction, and the value of x has () possibilities.

A.3 B. 4 C. 5 D. 6

3. There are 28 boys and 25 girls in Class 5 (3), and boys account for () of the class.

A. From 2825 BC to 2528 BC

4. Divide 4g into 5 parts, each part is ().

A. 15 kg B. 45 kg C. 45 kg D. 14

5. The greatest common factor of two numbers is 4 and the least common multiple is 24. These two numbers can't be ().

A.4 and 24 B. 8 and 12 C. 8 and 24

Four. Calculation (37%)

1, simplify the following score. 8%

① Eight tenths, ② Sixteen quarters, ③ Thirty-five twentieth, ④ Seventeen fifty-one.

2. Solve the equation: 12%

X-7.4 = 8 2X = 3.6 X÷ 1.8 = 3.6 X+6.4 = 14.4

3. Find the greatest common factor and the least common multiple of the following groups. (6%)

10 and 9 14 and 42 26 and 39

4. Turn the following score into a score with the same denominator equal to the original score. 6%

①2/3 and 4/5 ②7 /2 1 and 4/ 7 ③5/8 and 7/ 12.

5. Make an equation according to the meaning of the question and then answer it. (6 points)

① The sum of 7 x's is 10.5.

Verb (abbreviation of verb) application questions: (3 1% 65438 +0-3, 5 points for each question, and 4 points for the rest)

1. There are 138 male athletes participating in the 25th Olympic Games in China. Male athletes are twice as few as female athletes, four less. How many female athletes are there?

In Beijing's bid to host the 2008 Olympic Games, * * has 65,438+005 valid tickets, and Beijing has 56 tickets. What percentage of valid votes did Beijing get?

Party A and Party B borrow books from the library. Party A comes every 6 days and Party B comes every 8 days. If they meet in the library on April 2, when will they go to the library next time?

There is a piece of cloth 8 meters long, just enough to make 12 pairs of pants of the same size. How many meters of fabric is used for each pair of trousers? How much of this cloth is used for each pair of trousers?

5. Cut a rectangular piece of paper with a length of 20 cm and a width of 16 cm into squares with the same size and as large an area as possible. There is no paper. How many pieces can I cut at most?

6. A piece of paper with a pattern (as shown below). How many different ways are there to tear off two connected patterns?

★⊙ ⊙ ★⊙ ⊙

⊙ ★⊙ ⊙ ★⊙

7. Some pictures are arranged in sequence.

(1) Please calculate the 64th number.

(2) What is the percentage of the first 78 figures in the total?