1, 25 rabbits in a row. The white rabbit from the left ranks at 14 and the gray rabbit from the right ranks at 19. There is a rabbit between the little white rabbit and the little gray rabbit.
2. Twenty-five rabbits line up. Seen from the left, there are 14 rabbits in front of the white rabbit and 12 rabbits in the back. There is () rabbit between the little white rabbit and the little gray rabbit.
judge
A The difference between the largest single digit and the largest two digits is 90.
B. 1 1+W=20, 1 1+Y=2 1. So w "y "
C.yiyi has as many apples as Joel. My mother took five apples from Yiyi and gave them to Er Er Wu. Now there are five apples between them.
D, there is a box of oranges, two for two, and finally 1. There must be an odd number of fruits in this box.
E, there is a box of oranges, three for three, and finally 1. There must be an odd number of fruits in this box.
4.3.6.9's three numbers can be arranged into () different two-digit numbers, the largest of which is () and the smallest is ().
5. When Tutu did the addition, he misspelled an addend 13 as 3 1, and the result was 40, and the correct sum was ().
6. When doing subtraction, the rabbit mistakenly wrote a subtraction of 13 as 3 1, with a difference of 20, and the correct difference was ().
7. My mother is 32 years old and my baby is 8 years old. 10 years, my mother will be several years older than my baby.
8. Three big boxes were made one by one, and two small boxes were put in each big box. Today, * * * made () boxes.
9. If one addend increases by 6 and the other addend decreases by 6, and ()
10, if a subtree increases 10 and the minuend decreases 10, the difference is ().
1 1, ten digits are five digits larger than the number of a bit tree, and a * * * has () digits. Please write it down.
12, 26+A=26-A, then A= ()
13. There are two boxes with the same number of balls. If you put 10 in the first box and take 10 in the second box, the total number of balls in the two boxes is now ().
14. There are three boxes with the same number of balls. If you put 10 in the first box, 15 in the second box and 5 in the third box, the total number of balls in the two boxes is ().
15, there are three boxes with the same number of balls. If you put 10 in the first box, 15 in the second box and 10 in the third box, the total number of balls in the two boxes is ().
16. If there are three kinds of balls in the box, you need to touch at most a few balls to ensure that you can touch two balls with the same color.
17, there are four lanterns, red, yellow, green and blue. According to the different colors, there are () different arrangements.
18, dad bought three kinds of melons, cantaloupe, watermelon and white melon. Dad said: A melon, a cantaloupe and a watermelon weigh 5 kg, 8 kg and 7 kg respectively. Do you know the weight of these three melons?
20. Mother bought a chicken, a duck and a goose. Mom said: a chicken, a duck, 7 kg, a goose, 9 kg. You can tell me that a duck weighs 20 kilograms.
2 1. There are 350 hats in the first box and 80 hats in the second box. Take out 9 hats from the first box and put them in the second box at a time. After () times, the number of hats in the two boxes is equal.
23、 100-86+99-84+98-82+97-80+96==
24、98-23+83- 16+46-3 1+76-43+36=
25. My sister and brother share fruits, one for my sister and two for my brother. Sister takes 3, brother takes 4; Then my sister took five, seven, nine, 1 1, 13, 15, and my brother took six, eight, 10, 12, 14. You said () took more, and () more.
26,65438+1 October1,eight guests came to my house, and I took out a bag of candy with 44 pieces in it. I think, including myself, there are 9 people in our party, and everyone has to give out candy, but everyone can't get that many pieces of candy. Who will share and how?
27, children jump rope, a group of 1 1 children, the rules of the game are that the first person jumps, the second person jumps 3 times, and the third person jumps 5 times. . . . . 10 human jump 19, 1 1 human jump 2 1. How many times did this 1 1 child jump?
28. One-year-old children travel in a line. From top to bottom, Xiaohua is the 20th, and from bottom to top, Xiaohong is the 26th. Knowing that the last one in Xiaohua was Xiaohong, I asked the one-year-old child if he had ().
29. One-year-old children line up to travel. From top to bottom, Xiaohua is the 20th, and from bottom to top, Xiaohong is the 26th. I already know that the one in front of the little flower is Xiaohong. Ask a one-year-old child if he has ().
30. There is a row of flowers on campus. There are 8 pots of safflower on the left of 3 pots of yellow flowers, and there are 10 pots of safflower on the right of yellow flowers. Put a * * * ().
3 1, children line up, from left to right, there is 1 1 in front of the group leader, and there are five people between the group leader and Xiaohua, knowing that six people are right. Ask the group leader to count from right to left and rank (). From left, followed by () floret, from right to left, floret.
32. There are many colorful flags on the playground. There are three red flags in the middle, both of which are yellow. Counting from the left, the middle red flag is 19, and counting from the right, the middle red flag is 12. How many flags are there?