2.(25+300)÷5

3.25+75÷5+75

4.200-(35+48÷24)

5.(72+32×4)÷40

6.45+55-45+55

7.2-2×0+2

8. 10- 10÷ 10× 10

9.(75+25÷5)-40

10.2800÷25×4+80

1 1.2800÷25×4+80

12.(380-80×4)÷60

13.20- 16÷4+3×2

14.(20- 16)÷4+3×2

15.( 1520- 150)÷60-40

16.( 1520- 150)÷(60-40)

17.448×26+ 17523÷297

18.3600-(58+ 1872÷24)

19.48230÷( 150+37× 16)

20. 1000÷(850-25×26)+44

2 1.(7344÷72+98)×43

22.(905+985)÷(203- 168)

23.24×36-32 13÷9

24.(378- 158)÷(38+72)

25.726+824÷8-409

26. 120×3÷5

27. 120÷3÷5

28.78x 10 1- 178

29. 178 x 10 1- 17

30. 178x 10 1-78

3 1.3 × 49 - 4

32.8 × 156 + 17

33. 12× 5 – 9 ×3

34.8× 4 + 4

35.6÷ 38 – 38 ÷6

36.47 × 59 + 37 × 9

37.52 -( 32 + 45 )

38.78 + ( 1/8 + 1/9 )

39.9 × 56 + 56

40.34 × 89 - 13

4 1.7 × 549 + 34

42.6 ×( 12 + 3 )

43.8 × 5 + 8 × 1 15

44.3 1 × 56 – 56

45.97 - ( 27 – 102 1 )

46.59 × 18 – 14 × 27

47.45 × 25 16 + 23 × 34

48. 14 × 87 – 56 × 125

49. 1732 – 34 × 94

50.3 × 29 + 13

5 1.57 × 325 + 37

52.3 14 × 23 + 16

53. 15 × 23 + 56

54.922 + 1 1 1 ÷ 12

55.53 × 1 15 + 43

56.45 × 23 + 13 × 15

57.79 + 129 × 56

58. 14 + 34 ÷ 23

59.7 × 2 1 16 + 12

60. 10 1 × 15 – 15 × 2 1

6 1.50+(58+370)×(64-45)

62. 120- 148+35

63.347+45×2-4 160

64(58+37)×(64-9×5)

65.95×(64-45)

66. 178- 145+42 420+580-64×2 1

67.8 12-9+3 1× 1 1

68.85+ 14×( 14+208)

69.(284+ 16)×(5 12-8208)

70. 120-36×4+35

7 1.(58+37)×(64-9×5)

72.(68-68×55)÷85

73. 12× 12×48

74.32× 15+25

75.6-+785-37=

76.72÷8- 12×5

77.65×(48- 12×4)

78. 15- 1075×4-7

79.58×(37- 13)+42×374

80.352-(6+9)×25

8 1.8+3×7

82.9×2+4×3

83.6×(50-46)

84.3+3-5

85.63-9×6

86.(48+32)+5

87.74+ 105×3

88.74+ 100×3

88.65-6×4÷2

89.38+56÷7×3

90.(440-280)×(300—260)

9 1.(59+2 1)×(96÷8)

92.(220- 100)+( 15×2)

93.700-8×5×4

94.(275-35)+( 17+43)

95 .480+(96- 16+6)

96.( 15×40—360)×6

97. 14+ 16×4-50

98.74+(96÷6-8)

99.72-45+ 12 1÷ 1 1

100.20÷ 18×(806-799)

10 1.75÷25+300÷5

102.(85÷5+300)÷5

103.25+7÷25+75

104.20-(5+48÷24)

105.(7+2×4)÷40

106.555-45+55

107.2-20+2

108. 10- 1 10× 10

109.(5+25÷5)-40

1 10.200÷25×4+80

1 1 1.280÷25×4+80

1 12.(30-8×4)÷60

1 13.2- 16+3×2

1 14.(20-6)÷4+32

1 15.(52- 150)÷6-40

1 16.( 120-50)÷(60-40)

1 17.48×26+ 173 + 297

1 18.360-(58+ 1872-24)

1 19.230×( 150+37× 16)

120. 100÷(850-25×6)+44

12 1.(7344÷2+98)×43

122.(95+98)×(203- 168)

123. 124×36-32 13÷9

124.(378- 158)×(38+72)

125.26+824÷8-409

126. 12×3÷5

127. 12÷3÷5

128.8x 10 1- 178

129. 178 x 1 1- 17

130. 17x 10 1-78

13 1.3 × 4 - 4

132.8 × 16 + 1

133. 12× 5 – 3

134.8× 4 + 4

135.38 – 38 ÷2

136.47 × 59 + 7 × 9

137.2 -( 32 + 45 )

138.8 + ( 8 + 9 )

139.9 × 6 + 56

140.3 × 89 - 13

14 1.7 × 59 + 34

142.6 ×( 1 + 3 )

143.8 + 8 × 1 15

144.3 1 × 6 – 56

145.97 - ( 27 – 102)

146.9 × 18 – 1 × 27

147.45 × 26 + 23 × 34

148. 14 × 87 – 6 × 125

149. 17 – 34 × 94

150.3 × 9 + 13

15 1.57 × 32 + 37

152.3 × 23 + 16

153. 15 × 3 + 56

154.92 + 144 ÷ 12

155.3 × 1 15 + 43

156.5 × 23 + 13 × 15

157.7+ 129 × 56

158. 14 + 3 + 23

159.7 × 2 1 + 12

160. 10 × 15 – 15 × 2 1

16 1.50+(58+37)×(64-45)

162.20- 148+35

163.45×2-4 160

164(58+37)×65

165.95×( 1-45)

166.8- 145+420+580-64×2 1

167.8 1-9+3 1× 1 1

168.85+ 14×( 14+28)

169.(28+ 16)×(5 12-8208)

170. 12-36×4+35

17 1.(5+37)×(64-9×5)

172.(6 18-68×55)÷85

173. 1 12× 12×48

174.2× 15+25

175. 16-+785-37

176.72- 12×5

177.65×(8- 12×4)

178. 15- 107×4-7

179.5×(37- 13)+42×374

180.52-(6+9)×25

18 1.8+90×7

182. 19×2+4×3

183. 16×(50-46)

184.3 1+3-5

185.3-9×6

186.(4+32)+5

187.74+ 15×3

188.7+ 100×3

189.65-6×4÷2

190.(44 -280)×(300—260)

19 1.(59 1+2 1)×(96÷8)

192.(20- 100)+( 15×2)

193.70-8×5×4

194.(75-35)+( 17+43)

195 .40+(96- 16+6)

196.( 15×4—360)×6

197. 14+6×4-50

198.74+(6÷6-8)

199.2-45+ 12 1÷ 1 1

200.2 18×(806-799)

20 1.75÷5+300÷5

202.( 15÷5+300)÷5

203.2+7÷25+75

204.09-(5+48÷24)

205.( 17+2×4)÷40

206.55-45+55

207.92-20+2

208. 10- 10× 10

209.(5+5÷5)-40

2 10.20÷25×4+80

2 1 1.20÷25×4+80

2 12.(30-8×4)÷6

2 13.2-6+3×2

2 14.(2-6)÷4+32

2 15.(2- 150)÷6-40

2 16.(20-50)÷(60-40)

2 17.4×26+ 173 + 297

2 18.36-(58+ 1872-24)

2 19.20×( 150+37× 16)

220. 10÷(850-25×6)+44

22 1.(744÷2+98)×43

222.(9+98)×(203- 168)

223. 14×36-32 13÷9

224.(38- 158)×(38+72)

225.26+84÷8-409

226. 1×3÷5

227.2÷3÷5

228.8x 1 1- 178

229. 17x 1 1- 17

230. 17x 1 1-78

23 1.3 × 40 - 4

232.8 × 9 + 1

233. 12× 95 – 3

234.8× 94 + 4

235.3 – 38 ÷2

236.7 × 59 + 7 × 9

237.2 -( 3 + 45 )

238.8 + ( 98 + 9 )

239.9 × 6 + 6

240.3 × 8 - 13

24 1.7 × 9 + 34

242.6 ×( 1 + 3 )

243.8 + 8 × 15

244.3 1 × 6 – 6

245.97 - ( 2 – 102)

246.9 × 19 – 1 × 27

247.45 × 6 + 23 × 34

248. 14 × 7 – 6 × 125

249. 17 – 4 × 94

250.3 × 89 + 13

25 1.57 × 2 + 37

252.3 × 3 + 16

253.85 × 3 + 56

254.2 + 144 ÷ 12

255.3 × 1 1 + 43

256.5 × 2 + 13 × 15

257.7+ 19 × 56

258. 14 + 39 + 23

259.7 × 2 + 12

260. 10 × 5 – 15 × 2 1

26 1.50+(8+37)×(64-45)

262.20- 14+35

263.45×2-460

264(58+3)×65

265.95×( 10-45)

266.8- 145+40+50-64×2 1

267.8 1-9+3 1×9 1

268.85+ 14×(4+28)

269.(28+ 16)×(5 12-808)

270. 12-36×4+3

27 1.(5+3)×(64-9×5)

272.(668×55)÷85

273. 12× 12×48

274.2× 105+25

275. 16-+75-37

276.72- 12×5

277.65×(8- 12×4)

278. 15- 107×4-7

279.5×(37- 13)+2×374

280.2-(6+9)×25

28 1. 18+90×7

282. 109×2+4×3

283. 160×(50-46)

284.35 1+3-5

285.3-9× 106

286.(4+30)+5

287.74+ 19×3

288.7+ 10×3

289.5-6×4÷2

290.(4 -280)×(300—260)

29 1.(9 1+2 1)×(96÷8)

292.(90- 100)+( 15×2)

293.90-8×5×4

294.(5-35)+( 17+43)

295 .4+(96- 16+6)

296.( 19×4—360)×6

297. 1+6×4-50

298.7+(6÷6-8)

299.2-4+ 12 1÷ 1 1

300.2 1×(806-799

There are 523 teachers and students participating in tree planting in the whole school. If 70 people are divided into groups, at most, several groups are enough.

2. Enter a 466-word article by computer. Red can input 60 words per minute, and Congcong can finish it in 7 minutes. Who can get into it faster?

3. Uncle Wang's orchard harvested 358 Jin of apples, 270 Jin of pears and 0/96 Jin of plums. Apples are 40kg per box, pears are 30kg per box and plums are 20kg per box. Calculate: How many cartons do you need for each of these fruits?

4. Plant trees along the road with a length of 180m, and plant a tree every 20m. How many trees does a * * * need to plant?

Is 5.260 yuan enough for eight of us to buy tickets (how many ways can you figure out)?

6. The car travels at18m per second, with a length of18m and a tunnel length of 324m. How long does it take for this car to pass through the tunnel?

7. Chunguang Grain and Oil Company wants to export 680 tons of grain. How many containers do you need if you use 22-ton containers? If 17 ton container is used, how many containers are needed?

8. The length of the highway from Shijiazhuang to Chengde is 546 kilometers. If Hongjia drives from Shijiazhuang to Chengde to visit the summer resort, if it drives 78 kilometers per hour on average and leaves at 8 am, when will it arrive?

9. A rectangular vegetable field is 9 meters long and 6 meters wide. This vegetable field receives 972 kilograms of vegetables. How many Jin of vegetables do you collect per square meter on average?

10, Shanghai Oriental Pearl TV Tower is the tallest TV tower in Asia, with a height of 468 meters. The first floor 12 floor is 39 meters high. The height of the TV tower is equivalent to the height of several 12-story residential buildings.

1 1, Grandpa Wang's four cows produce 896 kilograms of milk every week. 1 How much milk does a cow produce on average every day?

12, four vehicles transport 960 bags of cement in three times. How many bags of cement are transported on average each time?

13, (1) There are three windows in each classroom of Shui Bo Primary School, and each window is equipped with 12 pieces of glass. How many pieces of glass have been installed in nine classrooms?

(2) Liu Yang Primary School has 12 classrooms, each classroom has 3 windows, and each classroom is equipped with 324 pieces of glass. How many pieces of glass are installed in each window on average?

14, Xiaohong bought two boxes of mung bean cakes, each box 1 kg. 20 tablets per box, how many grams does each tablet weigh on average?

15, the first bus leaves from Zhang Cun. If you drive at 60 kilometers per hour, you can reach Lizhuang in 4 hours. It only takes three hours to get there. How many kilometers does this bus actually travel per hour on average?

At 16, Baita Village plans to build a canal. If the construction is carried out at16m per day, it will be completed in 18 days. It was built to 24 meters on the first day. According to the progress of the first day, it will be completed in a few days.

17, Hong Guang Hotel bought 100 towels, each 6 yuan. How many towels can I buy if I buy a towel with this money of 8 yuan?

18, a pack of A4 copy paper, 25 sheets a day, used up in 20 days. If you use less than five cards a day, how many days can you use them?

19, a professional beekeeper, raised 24 boxes of bees this year. Last year, 5 boxes of bees brewed 375 kilograms of honey. According to last year's honey output, how many Jin of honey can be brewed this year?

20. Dongdongjia raised 135 trees on 15 square meters of land. According to this calculation, how much land is needed to raise 990 trees?

2 1, Hongshicun Primary School is divided into 6 groups, with 4 people in each group and 360 trees in each group. How many trees did everyone water on average?

There are three times as many eggs in the box as in the basket. There are 96 eggs in a box. How many eggs are there in six baskets?

23. The average speed of a train before speeding up is 7 1km, and it takes 12 hours to get from Qinhuangdao to Handan. After speeding up, the average speed is 95 kilometers per hour. After speeding up, it will take several hours to drive from Qinhuangdao to Handan.

24. Aunt Wang is an expert in making children's clothes. She can make 75 sets of children's clothes a week. Now the working week is five days. (1) According to this calculation, how many sets can she make in 15 days?

(2) How many days does it take to make 120 sets of children's clothes?

25. The coach from Beijing to Qingdao passes through Tianjin and Jinan. Left Beijing at 6:30 in the morning, with an average speed of 85 kilometers per hour. When does it arrive in Qingdao?

Beijing to Tianjin137 km; 360km from Tianjin to Jinan and 393 km from Jinan to Qingdao.

26. Sunshine Primary School has 960 teachers and students. In June, * * * used 60 tons. (1) How many tons of water does the school use on average every day?

(2) According to this calculation, how many people can use 1 ton of water for one day? How about a month?

27, 125 male students and 1 19 female students were led by three teachers to visit the history museum. During the visit, they can only enter in batches, with a maximum of 50 people allowed at a time. After calculation, they should be divided into at least several batches.

28. A story book has 448 pages. It took Yao Ming 16 days to read it. Fangfang reads four pages more than Yao Ming every day. How many pages does Fangfang read every day?

In order to carry out sports activities in the class, the class pays for playing basketball and volleyball. It is known that it takes 16 1 yuan to buy three basketballs and two volleyballs. If it costs 245 yuan to buy three basketballs and five volleyballs, how much is a basketball and a volleyball?

30. Mingming is a child who loves learning. He does some oral arithmetic problems every day except Sunday. If he does 300 words a week, (1) how many words can he do in three weeks?

(2)650 questions can be completed in a few days.

3 1, a tit can eat about 800 pests in 5 days. According to this calculation, how many pests can a titmouse eat in a month? A month is 30 days. )

32. A bus travels for 3 hours 174 km. At this speed, how many kilometers can 12 hour travel?

Grandpa Zhang bought three lambs and spent 75 yuan. He wants to buy five more lambs. How much will it cost?

34, 5 boxes of bees can brew 375 kilograms of honey a year. Kobayashi keeps 12 boxes of such bees. How many Jin of honey can you brew a year?

35. Yu Ying Primary School 180 Young Pioneers helped military families to do good deeds on "Love Day". These young pioneers are divided into five teams on average, and each team is divided into four groups. How many young pioneers are there in each group on average?

36. Uncle Liu took 700 yuan to buy fertilizer, bought 16 bags of fertilizer, and left 60 yuan. What's the price of each bag of fertilizer?

37. Eggs collected at Chunya Chicken Farm on Monday were packed in a box of 18kg. After 8 cases are packed, there is 16kg left. How many kilograms of eggs were collected on Monday?

38. Uncle Wang drove from the county seat to Wangzhuang to deliver fertilizer. I walked 40 kilometers per hour for three hours when I went there, and only two hours when I came back. How many kilometers per hour did you average when you came back?

39. A long-distance bus traveled in the plains and mountains for two hours and finally reached the top of the mountain. It is known that tourist buses travel 50 kilometers per hour in plain areas and 30 kilometers per hour in mountainous areas. How long will this trip take?

40. The school should add two new books to the library, each with three sets. It is known that each set of children's encyclopedias 125 yuan, and each set of mathematical conjectures 18 yuan. * * * How much?

4 1. The school is going to distribute exercise books to class 15, with 44 copies for each class15, and 40 copies for standby. How many exercise books should schools buy?

42, a tree seedling 16 yuan, buy 3 trees to get 1 tree. How much cheaper is it to buy three at a time?

43. Shampoo per bottle 15 yuan. The mall will carry out promotional activities. Buy 2 bottles and get 1 bottle. Buy two bottles at a time. How much cheaper is each bottle?

44, a bunch of flowers 20 yuan, buy four 1. Aunt Li buys 4 bundles at a time. How much cheaper is each bundle?

45. Beijing Road Primary School plans to buy some desks and chairs. With this money, you can buy 80 tables and 240 chairs. How many sets of tables and chairs can I buy with this money?

46. Pour 3 cups of water into an empty bottle, which weighs 650g. If you pour 5 glasses of water, the bottle weighs 850 grams. If you pour 1 glass of water, how many grams does the bottle weigh?