A, fill in a fill (25 points)

1, the number consisting of three ones and five tens is ().

The third number after 2.69 is (), and the second number before 49 is ().

3. The number 50 is less than 79 (), () is 20 larger than 36, and 28 is less than () 10.

The kitten is on the left of the puppy, and the puppy is on the side of the kitten.

5. "○" is a circle, "□" is a () shape, a dollar coin is a () shape, and a blackboard is usually a () shape, which can be composed of three wooden sticks of equal length.

6. Mom bought some fruits. Xiao Fang ate half, and there were three left. Mom bought () fruit.

7. My father is five years older than my mother this year, and my mother is younger than my father three years later ().

The "3" in 8 and 36 means () (), and 6 is in the position of (), which means () ().

9.3 yuan +5 Angle = 1 Yuan 8 Angle = 2 yuan 4 Angle +5 yuan 6 Angle =

10, when the minute hand points to 12 and the hour hand counts from 12 to the left, the two squares are ().

1 1, a book, Xiao Ming read from 18 to page 25, and he read the first ().

12, a Bird can be exchanged for () a 20-cent bill or () a 50-cent bill.

Second, fill in the numbers regularly. (12)

( 1)3 6 9 12 ( ) ( ).

(2) 12 10 8 ( ) 4 ( ).

(3)2 1 1 2 10 2 ( ) ( ) 8

Iii. Draw a picture and fill it in (18)

1、□○ □○ □○

2、△△□ △△□ △△□

3、○△○ ○△○ ○△○

□ a * * * has (), △ a * * * has (), 01* * has ().

Fourth, think well and do well. (14: 8+6)

1, 3, 5, 8 can form () two digits, in descending order:

( ).

2. Fill in the following two formulas: 1, 2, 3, 4, 5, 15, 16 (each number is used only once).

□-□=□ □+□-□=□

Five, interesting mathematics (10)

1, 14 children are playing hide-and-seek, four children have been arrested, and () children are still hiding.

There are 8 fluorescent lamps in the living room, all of which are on. If three lamps are turned off, there are () fluorescent lamps in the living room.

3. Huahua's house has three floors above and two floors below. This building has () floors.

4. 2 1 person queues up to go home from school, with 4 people behind Xiaodong and () people in front of Xiaodong; Xiaohong is in the middle, and she is in the back ().

Six, solve the problem (2 1 point, the fourth question 6 points)

1. My mother took a piece of money from 50 yuan and bought a dictionary from 8 yuan and an encyclopedia from 16 yuan. How much did her mother spend?

2. A pack of fructose, I ate 38 pieces and 20 pieces. How many slices are there in this packet of fructose?

3. Xiaoli and Xiaojun each have 17 candy. After Xiaoli gave Xiaojun 8 yuan, how many pieces of sugar did Xiaoli have less than Xiaojun?

There is a giraffe in the zoo. Its age is the largest two digits minus the smallest two digits, and then the largest one. How old is this giraffe?