Fill in the blanks. (15 points, each with one point empty)
(1) 4,536,000 is written as (), and the number rewritten as ten thousand is ().
(2) 3.04 square meters = () square meters () square decimeter.
(3) 0.6 ton = () kg.
The decimal unit of (4) is (), which consists of () such decimal units.
(5) =( ): 15= =( )%
(6) The ratio of A to B is 2: 3, B is C, and the ratio of C to A is ()
(7) The least common multiple of 24 and 18 is ()
(8) In descending order, 1.667, 167, 167%.
( )
(9) The volume of a cylinder is 48 cubic decimeters, and the volume of a cone with equal bottom and equal height is () cubic meters.
(10) A fraction, and the sum of numerator and denominator is 47. If the denominator is added with 13, the score is, and the original score is ().
Second, judge. (10, one point for each question)
1, the perimeters of two circles are equal, so their areas are equal. ( )
2. In proportion, two internal terms are reciprocal, and two external terms are reciprocal. ( )
3.A number is more than B number 10%, and B number is less than A number 10%. ( )
4. There are 98 students in grade five, all of whom are in school, and the attendance rate is 100%. ( )
5. The denominator is certain, and the numerator is inversely proportional to the fractional value. ( )
6. There are 6 kilograms of melon seeds. I ate 1 kg, and there are 5 kg left. ( )
7. Four times six of x is written as 4X+6. ()
8. Because 25% = 0.75, decimals and percentages have the same meaning. ( )
9. If A is 80% of B, then B is 25% more than A ... ()
10, and the annular area is larger than the sector area. ( )
Third, choose. (5 points, one point for each small question)
1. Divide the 5m-long rope into 7 segments on average, each segment accounting for () of the total length.
○ 1 m ○2 ○3 ○4 m
2. The number A is 60, which is 10% more than the number B. The formula of the number B is ().
○ 160×( 1+ 10%) ○2 60×( 1- 10%)
○360÷( 1- 10%) ○4 60÷( 1+ 10%)
3. On Arbor Day, middle school students planted trees, 100 trees survived, but two trees died, and the survival rate was ().
○ 1 100% ○2 98% ○3 102%
4, this year's output is 20% higher than last year, this year is last year's ().
○ 1 20% ○2 80% ○3 120%
5. When the unit price is fixed, the quantity and total price are divided into ()
1 is proportional; 02 is inversely proportional; 03 is out of proportion.
Fourth, calculation. (8+6+6+ 12=32 points)
1, a number written directly. (8 points)
304+ 198= 3- = 10 ×2= 1-4÷7=
7.5× = 5.2×6= 3.85×0+2.4= 2 1 ÷7=
2. Use a simple method to calculate. (6 points)
○ 19.98×78+22×9.98 ○24.9+ 5.56 + 4.34+ 5
3. Off-mold calculation. (6 points)
8.6+2.6×3.5÷ 1.3 8- 9.4- × ÷0.75
4. Solution ratio (12 points)
○ 1 =5: 14
75 : =2.5: 12
5. Column calculation. (8 points)
1200 divided by 20, what is the quotient?
○2 minus 1.8 divided by quotient, what's the difference?
Fifth, the application problem. (6 points ×5=30 points)
1. The distance between Party A and Party B is 640 kilometers. Buses and trucks run from Party A to Party B at the same time. It is known that the speed of trucks is 40 kilometers per hour, and the ratio of bus speed to truck speed is 3: 2. A few hours later, the distance between the two cars was 60 kilometers.
2. A road construction team paved a section of railway. It was originally planned to pave 3.2 kilometers a day, but it was actually paved 25% more than originally planned. The laying of this railway actually took 12 days. It was originally planned to finish paving in a few days. (Use proportional solution)
3. The pesticide liquid and water are prepared according to the ratio of 1: 1500. How many kilograms of liquid medicine and water does it take to prepare 750.5 kilograms of this pesticide?
4. Xiao Na read a book. On the first day, he read the total pages. The next day, he read 25% of the total pages. On the third day, he read 42 pages and just finished reading them. How many pages are there in this book?
5. Party A and Party B build a section of highway together. The working efficiency of team A is that of team B, and the two teams cooperate for 6 days. Just finished repairing this section of the road. The rest was repaired by team B alone. How many days will it take to complete?