1. Fill in the blank: 30% (65438+ 0 point per grid)

(2) Fill in the appropriate simplest score in the brackets below.

① 68 minutes = () hours ② 5200kg = () tons.

③ 3 liters 400 ml = () liters ④ 32 hours = () days.

(3) fill in the brackets with ">" and ".

① ( ) ② ( ) ③ ( )

④ ( ) ⑤ ( )0.76 ⑥ 6.65( )

The decimal unit of (4) is (), and the decimal unit like () is the smallest prime number.

⑸

[6] Arrange the four numbers 0.9, 0 and 0 from small to large.

( )

Once the denominator is 15, the simplest true fraction * * * has ().

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

(9) The shaded part on the right occupies the whole picture.

⑽ Add 12 to the numerator. To keep the size of the fraction unchanged, add () to the denominator.

⑾ A simplest fraction, if the numerator is enlarged three times and the denominator is reduced four times, you get 4.2. The simplest score turned out to be ().

⑿ There are 76 red, blue and white glass balls of the same size, which are always arranged in the order of 2 red balls, 3 blue balls and 4 white balls. The number of blue glass balls accounts for the total.

2. Judge the following questions: Mark "√" for the right and "×" for the wrong. 12%

The larger the denominator of the (1) score, the smaller the unit of the score. ………… ( )

The true score is less than 1 and the false score is greater than 1. …………………… ( )

(3) The reciprocal fraction of numerator and denominator is called simplest fraction. …………… ( )

(4) Divide the unit "1" into several parts, and the number representing such a part or parts is called a fraction ().

5] After the score is reduced, its size remains unchanged, but the score unit becomes larger ()

[6] cannot be converted to a finite decimal. ………………………………… ( )

3. Multiple choice questions: 8% (put the serial number of the correct answer in brackets)

(1) There are () cities with the simplest score greater than and less than.

A. countless

(2) It took 10 for Xiao Ming, 15 for Xiao Hua, 12 for Xiao Qiang and 13 for. () It was done quickly.

Xiaoming Xiaohua Xiao Qiang

(3) Divide a 2-meter-long iron wire into five sections on average, with meters accounting for () of the total length.

A.B. C. D。

(4) is a false fraction, and the sum is a natural number that is not zero, so it should be ().

A. greater than b less than c equals d greater than or equal to.

Four. Calculation problem: 30%

(1) Write directly. 4%

① + = ② - = ③ 1- = ④ 2+ =

(2) Change the following score into a score with the same denominator equal to the original score. 6%

The sum of ① ② and ③

(3) Simplify the following scores. 8%

① ② ③ ④

(4) Extract the following components. 6%

① 0.85 ② 4.4 ③ 3.375

5] Extract the following scores. 6%

① ② ③

Verb (abbreviation of verb) Application problem: 20% (5 points for each problem)

(1) There are 23 boys and 25 girls in Class One, Grade Five in a school. What percentage of girls are in the class?

(2) Distribute 3 tons of chemical fertilizer to 5 production teams on average. How many tons does each production team divide? How much of the total fertilizer does each production team get? (Just write and answer the second question. )

(3) Young Pioneers collect tree species. Seven people in the first team received 8 kilograms, and six people in the second team received 7 kilograms. Which team earns more on average?

(4) A pile of goods is 120 tons, and 45 tons have been used. How much is left in the total?