1. There are 10 fish in the fish tank, and 2 fish are dead. Ask how many fish are left in the fish tank; 1 Children eat a hamburger every 6 minutes. How many minutes does it take for three children to eat 1 hamburger at the same time?
2. A group of children play with eagles to catch chickens. One plays the eagle, one plays the hen and eight plays the chicken. Please come to three more groups. How many children are there in a group?
3. Children line up, the little red one ranks seventh from left to right, and the little red one ranks eighth from right to left. How many people are there in this line?
4. The teacher said: Eight children played hide and seek, and four children have been caught. How much is left?
5. There are two cups of juice, the baby drank half a cup first, and the mother filled it up again; The baby drank another half cup, and the mother filled it again. Finally, the baby drank it all. How many cups did the baby drink?
6. Strawberries and peaches each represent a number. Strawberries and peaches are equal to 7, strawberries and peaches are equal to 8. What are strawberries and peaches?
7. Xiao Fang spent 60 cents on pinyin books, and there is still 40 cents left. How much money does Xiao Fang have? how much is it?
8. A bunch of palm-sized hard cards represent numbers, circular cards represent 1, rectangular cards represent 2, triangle 3, square 4 and five-pointed star 5. Say a number and hold up the cards that make up the number.
A. Spelling 6
B. Spelling 10
Spell 13
9. Fill in numbers in mathematics
2+)= 13; 13-)=8; 3+5=)
4+6=); 8+6=); 13-8=)
10. A number greater than 67 means three, and a number less than 67 means three.
1 1. A square has four corners. Q: How many corners are left after cutting one corner?
12. There are 20 apples left in the kindergarten. How many apples are there in the kindergarten?
13. Xiaohong took part in the math contest and shook hands with everyone who took part in the contest. Xiao Hongyi shook hands 39 times and asked how many people took part in the math contest.
14. There are 7 ducklings by the river, 1 duckling. Four of them have crossed the river. How many ducklings are left?
15. On the bus, five people got on at the first stop, two people got off at the second stop and three people got on at the third stop. Q: How many people are left in the car? How many tickets did that aunt sell?
16. You line up with the children to do exercises. You are the sixth in the front and the fifth in the back. A * * *, how many children?
17. My mother is 30 years old and my father is three years older than my mother. Think about how old my dad will be in five years.
18. There are five sweets in each box. Take two pieces from the first box and put them in the second box. How many are there in each box now?
19. Cat and dog =2, dog and rabbit =3, rabbit+rabbit =6, ask cat =?
20." 1、4、? 、 10、? 、 16"; Please fill in the regular numbers at the question mark.