1. My brother has 4 apples, my sister has 3 apples and my brother has 8 apples. After my brother gave it to my brother 1, my brother ate three apples. Who has more apples at this time?

Xiaoming is 6 years old and Xiao Qiang is 4 years old. How old is Xiaoming two years later?

Students line up to do exercises. There are four people in front of Xiaoming and four people behind him. How many people are there in this team?

4. There is a book. Xiaohua read two pages on the first day, and then read two more pages every day than the day before. How many pages did he read on the fourth day?

Students line up to do exercises. From the front, Xiao Ming ranks fourth, and from the back, Xiao Ming ranks fifth. This team has a * * *.

How many people?

6. There are eight rubber balls. If every boy sends one, there will be two more. If every girl sends one, there will be two less. How many boys and girls are there?

7. The teacher gave each of the nine outstanding students a flower and 1 red flower. How many red flowers does the teacher have?

8. There are five students throwing sandbags. If the teacher gives each person two sandbags, the difference is 1. How many sandbags does the teacher have?

9. There were nine books just now. Dad bought him five more, and Xiaoming borrowed two. How many books were there just now?

10. A group of pupils, eight students are taller than Li Ping and seven students are shorter than him. How many students are there in this group?

First, calculate the space.

7 +6= 5-0= 5-5= 10-7=

0 + 8= 8 + 3= 9 +2= 9-7=

6-6= 15- 10= 6 + 9= 8 + 7=

6 + 10-6= 7 + 4 + 3= 14- 10+5= 18-3-5 =

Second, the knowledge castle.

1. Fill in the numbers in order.

2.8+()= 12 ()+8= 14 14-()=96+()= 15 15-()= 10()+9= 1 1

3. fill in ">", "

7 ○ 1 1 17 ○ 10+7 14- 10 ○ 6

4.20 There are () tens, and 10 has () ones. 13 has () ten bits and () bits.

5. If both addends are 8, the sum is (); If the minuend is 19 and the minuend is 9,

The difference is ().

6. Write down the number.

Second, judge a sentence (mark "√" for the painting and "×" for the wrong painting)

1 1. Xiaoming said, "The longer the two sides of an angle, the bigger the angle." ()

12. The height of a building 15cm. ()

13. When observing an object, no matter where you stand, you will see the same shape. ()

The results of 14.4×9 and 9×4 are the same, and they are calculated by the same formula. ()

15. In multiplication, the product must be greater than the factor. ()

Third, choose one. (Fill in the serial number of the correct answer in brackets)

16. In the figure below, () is asymmetric.

① ② ③ ④

17. Estimation: The score of the following () is greater than 80.

① 4 1+9 ② 90- 18 ③ 3 1+52④ 100-20- 1

18. The formula different from the result of adding three 4' s is ().

① 3+3+3+3 ② 4×3③ 3+4 ④ 2×6

What is the five times of 19.8? The correct formula is ().

① 8+5 ② 8×5 ③ 8-5 ④ 8÷5

20. The sum and difference of each group number is equal to ().

① 2 and 1 ② 3 and 2 ③ 5 and 5 ④ 1 and 0.

Fourth, draw a picture and line it up.

2 1. Draw a line 2 cm longer than 4 cm.

22. Draw a right angle and an angle greater than the right angle respectively.

5. Do the math.

23. oral calculation.

9×7=5×8=5×4=8×4=

65+9=52-40=96-24= 37+2 1=

5×7+5= 3×5-9=24―6―6= 3+3+3+5=

24. Write calculations.

56+43= 86-36=62-58=

Sixth, use mathematics.

25. Xiaohua has 23 pieces of red colored paper, 15 pieces of yellow colored paper, and gave it to his sister 14 pieces. How many pieces are left?

□□□□□□□□□ =□ (Zhang)

A: There is one left.

26. Xiao Fang, Xiao Li and Xiao Yu read extracurricular books together.

(1) How many pages did Xiaoli read?

□□□□□□□ =□ (page)

Xiao Li read this page.

(2) How many pages did Xiaoyu read?

□□□□□□□ =□ (page)

A: Xiao Yu read the page.

(3) Who reads the most pages?

□ >□>□

A: I read the most pages.

27. Mom wants to buy four cups and a thermos. Is it enough to bring 20 yuan?

A: Yes.

28. Mathematical problems in labor.

Clean the desks and chairs, clean the blackboard and sweep the floor.

number of people

Clean the desks and chairs, clean the blackboard and sweep the floor.

Seven, mathematics paradise.

29. Some addition formulas can be rewritten as multiplication formulas. Such as 2+2+2+4 = 2× 5.

Can the following addition formula be replaced by multiplication formula? Please have a try.

6+6+5+6+ 1=□×□2+2+2+3+3=□×□

3+3+4+5=□×□5+6+7+8+9=□×□