1. Students should make 10 lanterns. Eight lanterns have been made. How much more do they have to do? ? Six butterflies flew away from the flowers, and five others flew away. How many flew away twice? ? There were 15 planes at the airport, and three of them flew away. How many planes are there at the airport now? ? Xiaoping planted 7 pots of safflower and the same amount of yellow flowers. How many pots of two kinds of flowers? ? The school used to have 5 bottles of glue and bought back 9 bottles. How many bottles are there now? ? 6. Xiao Qiang has 10 apples. I ate seven apples. How many more are there? ? 7. There are 13 cars in the passenger station, and three cars have already left. How many cars are there? ? 8. Children make paper-cuts with 8 pieces of red paper and the same amount of yellow paper. How many sheets of paper did they use? ? 9. There are 9 horses in the racecourse, and 5 more will come soon. How many horses are there on the racetrack now? ? 10, the store has 15 fans, and 5 fans have been sold. How many fans are there now? ? 1 1. The school has *** 15 pots of orchids and chrysanthemums, 6 pots of orchids and several pots of chrysanthemums. ? 12, Xiaoqing drew twice 17, the first time was nine, and the second time was how much? ? 13, Xiaohong's family has *** 13 apples, 4 apples and how many pears? ? 14. The school wants to send 12 boxes of stationery to primary schools in mountainous areas. Seven boxes have been delivered. How many more boxes do you want to send? ? 15. There are 1 1 cabbage at home. After eating five, how many more? ? 16. There are 48 trees on both sides of a road. A * *, how many trees have been planted? ? 17. Eight cars left in the parking lot, leaving 24 cars. How many cars are there in the parking lot? ? 18. Eight carts and the same number of cars were taken away from the parking lot. How many cars have been driven away twice? ? 19. There are 6 footballs in the school gymnasium, and 20 have been bought. How many are there now? ? 20. Learn from Lei Feng. The team repaired 8 chairs in the morning and 9 chairs in the afternoon. How many chairs have been repaired in one day? ? 2 1, I calculated 12 math problems in the morning and 8 math problems in the afternoon. How many more math problems did you work out in the morning than in the afternoon? ? 22. There are 20 girls in the library, 10 boys. How many boys are less than girls? ? There are 20 big monkeys and 30 small monkeys in the zoo. How many little monkeys are there than big monkeys? ? 24. School football 10, basketball 16. How much less is football than basketball? ? There are 40 pots of orchids and 60 pots of chrysanthemums in the garden. How many pots of orchids can be planted as many as chrysanthemums? ? 26. Mom bought 18 red buttons, 10 white buttons and 8 black buttons. ? (1) How many red buttons are there than white buttons? ? (2) How many black buttons are there than white buttons? ? 27. Xiaohua made 20 envelopes. Liang Xiao earned 6 pounds more than Xiaohua. How much did Liang Xiao do? ? 28. There are two bookshelves. There are 16 books on the first floor. There are eight books on the second floor. How many books are there on the second floor? ? 29. Mom bought six apples. There are four more pears than apples. How many pears are there? ? 30. There are 30 roosters in the feeding group, and there are 48 hens more than roosters. How many hens are there?