1. My brother is 12 years old this year, and Xiaoming is 7 years old. How old is my brother? Two years ago, how old was Xiao Ming younger than his brother? 5 ,5

My mother is 30 years old and my father is 35 years old. My mother is a few years younger than my father. 10 years later, how old is dad than mom? 5,5

My sister is 6 years old. Two years later, my sister is three years younger than my sister. How old is my sister this year? nine

4. Students line up to do exercises. There are nine students in front of Wang Hong and five students behind. How many students are there in this team? 15

Xiaohong repaired the desks and chairs with five classmates, and then six came. How many students are there now? 12

There is a row of saplings in front of Xiaoming's house. There are six poplars on the left and 10 pine trees on the right. How many seedlings are there in this row? 17

7. Jingshan Park held a dinosaur exhibition. Teacher Wang is taking 15 boys and 12 girls on a tour. How many tickets should Miss Wang buy? 28

8. The two grandfathers each raised 20 pigeons. Grandpa Zhang lost 1 pigeon, and Grandpa Sun raised 1 pigeon. Excuse me: Who keeps more pigeons now? How many pigeons are there? Grandpa Sun, 2

9. There are 100 apples in the basket, 20 apples were sold in the morning and 40 apples were sold in the afternoon. How many apples are missing from the basket? 60

10. There are 50 chickens and 50 ducks in the cage. Later, three chickens were taken away by the weasel, and my mother bought four more chickens and four ducks. There are many chickens in the cage now? Or more ducks? How much more? Number of ducks, 3

1 1. There are two kinds of cannas at home in Yue Yue. In the morning, the red canna bloomed three times, but the yellow canna withered 1. At this time, the number of safflower and yellow flower is as high as 12. Excuse me, which canna has more flowers? How much more? Canna Canna 4

12. There are five new households in Wang Fu apartment. Now a * * *, 42 families. How many families are there in Wang Fu apartment? 37

13. After the new school year started, a new classmate was transferred to Class 1, Grade 3. Now there are 50 students in Class 3 (1). Excuse me, how many students are there in Class Three (1)? Forty nine

14. Teacher Ren used 15 pieces of chalk, and there are 20 pieces left in the chalk box. How many pieces of chalk were there in the original chalk box? 35

15. Six pink butterflies flew away from the garden and four yellow butterflies flew in. There are 30 butterflies in the garden now, while there were several butterflies in the garden before.

16. Lingling lives on the ninth floor of a building. It took her 1 minute to get to the sixth floor. How many minutes does it take her to get from the sixth floor to the ninth floor? eight

17. Mom wants to cut a rope into five pieces. How many scissors should she cut? four

18. Xiaohong and Xiaoming live in the same building. Xiaoming lives on the 6th floor, Xiaohong lives on the 3rd floor, and Xiaohong is at 1 building needs 1 minute. How many minutes does it take from his home to Xiaoming's? three

19. Dacheng sawed a piece of wood into three sections, each of which took three minutes. How many minutes does it take to saw two pieces of this wood? 12

20. Grandma is 60 years old and Bird is 8 years old. In five years, grandma will be older than Zhang Yuanda ()? Fifty two

2 1. 1, 3,5 can form () different three numbers? Please write .6135153 315351513531.

22. After Xiao Wei gave Xiaoling four sweets, Xiaoling got four sweets. How many children does Xiao Wei have than Xiaoling? eight

23. After Xiao Wei gave Xiaoling four sweets, she got two more than Xiaoling. How many are there in Xiao Wei? 10

24. Among the four winners of the quiz, the first one scored 2 points more than the second one; The second place scored 2 points more than the third place; The third place scored 2 points more than the fourth place. They got 20 points. How many points did they each get? 8 6 4 2

25. For dessert, there is 16. Xiaoming ate half and left half. Xiaohong ate half of it and gave the rest to Xiao Yong and Jony J.

Excuse me: Xiao Ming eats () Xiao Hong eats ().

Xiao Yong eats () and Jony J eats () 8422.

26. It takes 16 minutes for Li Jiang to walk from home to the cinema. Four minutes after he left home, he found that he didn't take the movie ticket. He immediately went home and got the movie ticket. How many minutes did it take Li to get to the cinema? 24

27. When you do your homework at night, you should pull the switch and the light will come on. But Xiao Ming pulled the switch seven times in a row. Please think about it. Is the light on or off at the moment? What if you pull it eight times in a row? Bright, not bright

28. Count one: Friends A, B, C and D, eighteen apples divided by * * *.

One less for each person in turn, how many for each side? 6 5 4 3

29. Item 2: There is a sea of people in front of the theater, so sit down when you enter the door.

I will sit in the sixteenth and eighteenth row from the bottom.

Please help me calculate, how many rows are there in all the seats? 33

There are 40 students in Class Two (3). In physical education class, Mr. Wang asked them to line up every ten students, and there were only six students left in the last row. Ah, please calculate, if the number of absentees does not exceed 10, what is the number of absentees? four

3 1.2+4+6+8+ 10+ 12+ 14+ 16+ 18+20= 1 10

32. 1+3+5+7+9+ 1 1+ 13+ 15+ 17+ 19= 100

The students in the class are all 8 or 9 years old. What is the oldest age of any two students sitting together? How old is the youngest? 18 16

34. Xiaodong looked at his uncle and saw the wood. It took two minutes to watch it once. Finally, his uncle sawed the wood into five pieces. His uncle let Xiaodong do the math. How many minutes did he watch it? Xiaodong, use your head. Please calculate it. eight

35. Planting trees on one side of a road, nine trees have been planted from one end of the road to the other, and the distance between every two trees is 3 meters. How long is this horse path? 24

36. One day, Teacher Lou asked Zhang Tianqi to give her the bookmark sandwiched between pages 37 and 38 of the Chinese book. Do you think Zhang Tianqi can get it? cannot

37. Big hair and small hair each have 8 sweets. After the big hair gave the little hair three sweets, how many more did the little hair have than the big hair? six

38. The clock strikes 3 times and it takes 2 seconds to knock out; How many seconds did eight o'clock strike? (Reminder: Find the interval) 7

39. The clock strikes 4 at 4 o'clock and strikes in 3 seconds; /kloc-knock at 0/2. How many seconds does it take? 1 1

40. 1+2+3+4+5+6+7+8+9= 45

4 1. 1+2+3+4+5+6+7+8+9+ 10= 55

42. Is the sum of the first ten natural numbers: 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10 singular or even? odd number

43. Teacher Miao and Teacher Lou, a math teacher, took their students to hangzhou paradise for a spring outing. Class 1 (1) has 48 people and Class 1 (2) has 48 people. Everyone is required to buy tickets to enter the park. How many tickets should I buy? 99