1, the circumference of a circle is 25.12cm, and its area is () cm2.

2. The actual output increased by 20% compared with the original plan, and the actual output was equivalent to ()% of the original plan.

The ratio of 3.9/ 1 1 and11is (). The simplified ratio is ()

4. In 1/3, 0.333, 33% and 0.3, the maximum number is () and the minimum number is ().

5. Fill in ">" in () below. , "<" and "=". 9/ 1 1×24( )9/ 1 1 5÷8( )62.5% 36÷2/7( )36 2/ 13×9/4( )2/ 13

6. A story book has been read for 5/7, and the ratio of unread pages to read pages is ().

7、( )÷9=( )/40=0.5=( )%。

8. The ratio of male teachers to female teachers in a school is 3: 5, and male teachers account for () of the total number of teachers in the school. There are more female teachers than male teachers ().

9. Cut out a disc with a radius of 1 cm on a rectangular piece of paper with a length of 20 cm and a width of 9 cm. You can cut up to () discs.

10, a glass of juice, finished 1/4, filled with water 1/5. Fill it with water. At this time, the ratio of water to juice in the cup is ().

1 1. Divide a 5-meter-long iron wire into 7 segments, each with a length of () and each with a length of ().

/kloc-Class 0/2 and Grade 6 (1) attended 48 people a day, and 2 people were absent. The attendance rate of this day is ().

13. It takes 4 hours in place A and 3 hours in place B.. The speed ratio of a and b is (). If Party A and Party B go in opposite directions from two places, it will take () hours to meet.

14. In a subtraction, the minuend is 96, the ratio of the minuend to the difference is 7: 9, the minuend is (), and the difference is ().

Second, choose. (Fill in the correct answers in brackets) (6 points)

Put 1 and 1 g liquid medicine into100g water, and the ratio of medicine to liquid medicine is ().

a、 1； 99 B、 1: 100 C、 1: 10 1 D、 100: 10 1

2. Let c be the circumference of a circle, then c/ = ()

The radius of a circle, the diameter of b circle and the area of c circle.

3, Xiaohong 1/4 hours to walk 3/4 kilometers. How many kilometers per hour is ()

a、 1/4 B、3/4 C、3/4 1/4

4 is a natural number that is not 0, and the number of () in the following formula is the smallest.

A 4/5 B 14/5 C 4/5

5, and the ratio of 8: 6 is equal to (a)

A(8 8):(6 6) B( 8 2):(6 2) C(8 3):(6 3)

6. The number of A is 1.25 times that of B, and the number of B is (C )% less than that of A..

a、25 B、75 C、20

Third, calculation:

1, a number written directly. (4 points

3/4 ÷ 1/2=( ) 9/ 10÷ 9= ? ( ) 10 × 10%= (2/3+ 1/2) × 12=

5/8 ÷2/3= 2 1/5+8 20%= 26/9= 5-7/5- 1.6=

2, off-type calculation (can be simplified) (12 points)

6 ×3/ 10 - 3/ 10 ×6

= 1/3 ÷3/4 (3/4-5/ 12) =

12× ( 1/4+ 1/6- 1/3) 99×97/98=

3, solve the equation (6 points)

1/2x+ 1/3 = 3/4 5/8x-3/8 = 62.5% x- 12% x = 2.8 16

These questions are quite simple, but if you are not careful, you will be wrong. The topic of the last exam in primary school is almost that simple! ! ! O(∩_∩)O~……