1. Fill in the blanks: (24 points)
1、 + + + =( )? ( )= ( )。
2, 12 is (), and 24 is ().
3. Fill in ○? & lt？ 、? & gt？ 、? =? . New | Curriculum | Standard | First | Net
? 4○ 9 ? ○ ? 9 ? ○ 4. Read a book, read the whole book every day, and read the whole book in 3 days ().
5、3? It means ().
6. Lili stands and turns right 40? The backward direction is ().
Ding Ding faces the west station and turns left 40 degrees? The backward direction is ().
7. A rope with a length of 1 meter is divided into four sections on average, each section is () meters long, and each section
() of the total length.
8、3∶8=( )=( )? ( )= 12∶( )=( )∶24
9, 5 and () are reciprocal. The reciprocal of () is itself. () No.
There is a countdown. X k B 1。 chief operating officer
The simplest integer ratio of 10 and 18:36 is (), and the ratio of 18:36 is ().
1 1, the number of red flowers is equal to the number of yellow flowers. Is () regarded as a unit? 1?
2. Judgment: (20 points)
1, the reciprocal of the natural number a is. ( )
2. 1 ton weighs 4 tons. ( )
3, a wire is 3 meters long, and there are meters after use. ( )
4, 60, equivalent to 80. ( )
5. Taishan Football Team beat Jinniu Team 3-0, which shows that under special circumstances, it is better than.
The latter item can be 0. ( )
The ratio of 6,36: 9 to the simplest integer is 4. ( )
7. 10g sugar is dissolved in 10g water, and the ratio of sugar to syrup is 1: 10. ( )
8. Multiply the former term of a ratio and divide the latter term by 4, and the ratio remains unchanged. ( )
9. The reciprocal of all integers is less than itself. ( )
10, the number of A is five times that of B, and the ratio of A to B is 5∶ 1. ( )
Three. Selection: (fill in the serial number in brackets) (14 points)
1、 12? (+)=3+4=7, calculated according to ()'.
A, multiplicative commutative law b, multiplicative distributive law c, multiplicative associative law
2. The reciprocal of () must be greater than 1?
A, true fraction b, false fraction c, any number
3, rectangular vegetable field, 20 meters long, wide for long, the formula for calculating the area is ().
a、20？ b、20？ +20°C、20？ (20? )
4. Add 12 to the previous item of 4: 7. To keep the proportion unchanged, add () to the latter item.
a、 12 B、2 1 C、28 D、32
5, a number divided by its reciprocal, quotient ().
A, must be greater than 1 B, must be less than 1 C, must be equal to 1 D, uncertain.
6. The library is at No.30 in the southeast of the theater. Direction 500 meters, then the theater is in the book ().
1. East-south 30? Direction 500 meters b, 60 east of south? Direction 500 meters
C, northwest 30? Direction 500 meters d, 30 north by west? Direction 500 meters
7. A section of the road takes 9 hours for Party A, 3 hours for Party B, and two cars for Party A and Party B..
The speed ratio is (). W W W W x K b 1 c o M
a、9∶3 B、3∶3 C、 1∶3
Four. Calculation: (25 points)
1, write the number directly (5 points)
? = ? 12= ? = 45 ? = ? 0.4=
? = 14? = ? = ? 4= ? =
2, can simplify (6 points) new-class-standard-the first-a-net.
( + )? 32 ? + ?
3. Simplify first, and then find the ratio. (8 points)
1.5: 2.114: 35: 6km: 300m.
4. Solving equations: (6 points)
x = 15 x？ = x？ = 18
X k B 1。 chief operating officer
V. Application problems (17 points)
1. An orchard covers an area of 20 hectares, including how many hectares of apple trees, pear trees and apple trees? (4 points)
2. The original price of a suit 180 yuan, and the current price is lower than the original price. What's the current price? (5 points)
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3. The following is the location map of the radar station and several small islands, with the radar station as the observation point (8 points).
(1) Island A is located in the direction of () () and kilometers away from the radar station ();
(2) Island B is located in the direction of () (), and it is kilometers away from the radar station ();