311真题24

2: (5 × 8) - 2 × 8

3: 5 × 8 -(2 × 8)

4: (5 × 8) - (2 × 8)

5: (5 × 8 + 8) ÷ 2

6: ((5 × 8) + 8) ÷ 2

7: 5 × 8 - 8 × 2

8: (5 × 8) - 8 × 2

9: 5 × 8 -(8 × 2)

10: (5 × 8) - (8 × 2)

11: 8 × 5 - 2 × 8

12: (8 × 5) - 2 × 8

13: 8 × 5 -(2 × 8)

14: (8 × 5) - (2 × 8)

15: (8 + 5 × 8) ÷ 2

16: (8 + (5 × 8)) ÷ 2

17: (8 × 5 + 8) ÷ 2

18: ((8 × 5) + 8) ÷ 2

19: 8 × 5 - 8 × 2

20: (8 × 5) - 8 × 2

21: 8 × 5 -(8 × 2)

22: (8 × 5) - (8 × 2)

23: (8 + 8 × 5) ÷ 2

24: (8 + (8 × 5)) ÷ 2

1: (1 + 2 + 3) × 4

2: ((1 + 2) + 3) × 4

3: (1 + (2 + 3)) × 4

4: 1 × 2 × 3 × 4

5: (1 × 2) × 3 × 4

6: (1 × 2 × 3) × 4

7: ((1 × 2) × 3) × 4

8: (1 × (2 × 3)) × 4

9: 1 × (2 × 3) × 4

10: 1 × (2 × 3 × 4)

11: 1 × ((2 × 3) × 4)

12: 1 × (2 × (3 × 4))

13: 1 × 2 ×(3 × 4)

14: (1 × 2) × (3 × 4)

15: 1 × 2 × 4 × 3

16: (1 × 2) × 4 × 3

17: (1 × 2 × 4) × 3

18: ((1 × 2) × 4) × 3

19: (1 × (2 × 4)) × 3

20: 1 × (2 × 4) × 3

21: 1 × (2 × 4 × 3)

22: 1 × ((2 × 4) × 3)

23: 1 × (2 × (4 × 3))

24: 1 × 2 ×(4 × 3)

25: (1 × 2) × (4 × 3)

26: (1 + 3 + 2) × 4

27: ((1 + 3) + 2) × 4

28: (1 + (3 + 2)) × 4

29: (1 + 3) × (2 + 4)

30: 1 × 3 × 2 × 4

31: (1 × 3) × 2 × 4

32: (1 × 3 × 2) × 4

33: ((1 × 3) × 2) × 4

34: (1 × (3 × 2)) × 4

35: 1 × (3 × 2) × 4

36: 1 × (3 × 2 × 4)

37: 1 × ((3 × 2) × 4)

38: 1 × (3 × (2 × 4))

39: 1 × 3 ×(2 × 4)

40: (1 × 3) × (2 × 4)

41: (1 + 3) × (4 + 2)

42: 1 × 3 × 4 × 2

43: (1 × 3) × 4 × 2

44: (1 × 3 × 4) × 2

45: ((1 × 3) × 4) × 2

46: (1 × (3 × 4)) × 2

47: 1 × (3 × 4) × 2

48: 1 × (3 × 4 × 2)

49: 1 × ((3 × 4) × 2)

50: 1 × (3 × (4 × 2))

51: 1 × 3 ×(4 × 2)

52: (1 × 3) × (4 × 2)

53: 1 × 4 × 2 × 3

54: (1 × 4) × 2 × 3

55: (1 × 4 × 2) × 3

56: ((1 × 4) × 2) × 3

57: (1 × (4 × 2)) × 3

58: 1 × (4 × 2) × 3

59: 1 × (4 × 2 × 3)

60: 1 × ((4 × 2) × 3)

61: 1 × (4 × (2 × 3))

62: 1 × 4 ×(2 × 3)

63: (1 × 4) × (2 × 3)

64: 1 × 4 × 3 × 2

65: (1 × 4) × 3 × 2

66: (1 × 4 × 3) × 2

67: ((1 × 4) × 3) × 2

68: (1 × (4 × 3)) × 2

69: 1 × (4 × 3) × 2

70: 1 × (4 × 3 × 2)

71: 1 × ((4 × 3) × 2)

72: 1 × (4 × (3 × 2))

73: 1 × 4 ×(3 × 2)

74: (1 × 4) × (3 × 2)

75: (2 + 1 + 3) × 4

76: ((2 + 1) + 3) × 4

77: (2 + (1 + 3)) × 4

78: 2 × 1 × 3 × 4

79: (2 × 1) × 3 × 4

80: (2 × 1 × 3) × 4

81: ((2 × 1) × 3) × 4

82: (2 × (1 × 3)) × 4

83: 2 × (1 × 3) × 4

84: 2 × (1 × 3 × 4)

85: 2 × ((1 × 3) × 4)

86: 2 × (1 × (3 × 4))

87: 2 × 1 ×(3 × 4)

88: (2 × 1) × (3 × 4)

89: 2 ÷ 1 × 3 × 4

90: (2 ÷ 1) × 3 × 4

91: (2 ÷ 1 × 3) × 4

92: ((2 ÷ 1) × 3) × 4

93: 2 ÷ 1 ×(3 × 4)

94: (2 ÷ 1) × (3 × 4)

95: (2 ÷ (1 ÷ 3)) × 4

96: 2 ÷ (1 ÷ 3) × 4

97: 2 ÷ (1 ÷ (3 × 4))

98: 2 ÷ (1 ÷ 3 ÷ 4)

99: 2 ÷ ((1 ÷ 3) ÷ 4)

100: 2 × 1 × 4 × 3

101: (2 × 1) × 4 × 3

102: (2 × 1 × 4) × 3

103: ((2 × 1) × 4) × 3

104: (2 × (1 × 4)) × 3

105: 2 × (1 × 4) × 3

106: 2 × (1 × 4 × 3)

107: 2 × ((1 × 4) × 3)

108: 2 × (1 × (4 × 3))

109: 2 × 1 ×(4 × 3)

110: (2 × 1) × (4 × 3)

111: 2 ÷ 1 × 4 × 3

112: (2 ÷ 1) × 4 × 3

113: (2 ÷ 1 × 4) × 3

114: ((2 ÷ 1) × 4) × 3

115: 2 ÷ 1 ×(4 × 3)

116: (2 ÷ 1) × (4 × 3)

117: (2 ÷ (1 ÷ 4)) × 3

118: 2 ÷ (1 ÷ 4) × 3

119: 2 ÷ (1 ÷ (4 × 3))

120: 2 ÷ (1 ÷ 4 ÷ 3)

121: 2 ÷ ((1 ÷ 4) ÷ 3)

122: (2 + 3 + 1) × 4

123: ((2 + 3) + 1) × 4

124: (2 + (3 + 1)) × 4

125: 2 × 3 × 1 × 4

126: (2 × 3) × 1 × 4

127: (2 × 3 × 1) × 4

128: ((2 × 3) × 1) × 4

129: (2 × (3 × 1)) × 4

130: 2 × (3 × 1) × 4

131: 2 × (3 × 1 × 4)

132: 2 × ((3 × 1) × 4)

133: 2 × (3 × (1 × 4))

134: 2 × 3 ×(1 × 4)

135: (2 × 3) × (1 × 4)

136: 2 × 3 ÷ 1 × 4

137: (2 × 3) ÷ 1 × 4

138: (2 × 3 ÷ 1) × 4

139: ((2 × 3) ÷ 1) × 4

140: (2 × (3 ÷ 1)) × 4

141: 2 × (3 ÷ 1) × 4

142: 2 × (3 ÷ 1 × 4)

143: 2 × ((3 ÷ 1) × 4)

144: 2 × (3 ÷ (1 ÷ 4))

145: 2 × 3 ÷(1 ÷ 4)

146: (2 × 3) ÷ (1 ÷ 4)

147: 2 × 3 × 4 × 1

148: (2 × 3) × 4 × 1

149: (2 × 3 × 4) × 1

150: ((2 × 3) × 4) × 1

151: (2 × (3 × 4)) × 1

152: 2 × (3 × 4) × 1

153: 2 × (3 × 4 × 1)

154: 2 × ((3 × 4) × 1)

155: 2 × (3 × (4 × 1))

156: 2 × 3 ×(4 × 1)

157: (2 × 3) × (4 × 1)

158: 2 × 3 × 4 ÷ 1

159: (2 × 3) × 4 ÷ 1

160: (2 × 3 × 4) ÷ 1

161: ((2 × 3) × 4) ÷ 1

162: (2 × (3 × 4)) ÷ 1

163: 2 × (3 × 4) ÷ 1

164: 2 × (3 × 4 ÷ 1)

165: 2 × ((3 × 4) ÷ 1)

166: 2 × (3 × (4 ÷ 1))

167: 2 × 3 ×(4 ÷ 1)

168: (2 × 3) × (4 ÷ 1)

169: (2 + 4) × (1 + 3)

170: 2 × 4 × 1 × 3

171: (2 × 4) × 1 × 3

172: (2 × 4 × 1) × 3

173: ((2 × 4) × 1) × 3

174: (2 × (4 × 1)) × 3

175: 2 × (4 × 1) × 3

176: 2 × (4 × 1 × 3)

177: 2 × ((4 × 1) × 3)

178: 2 × (4 × (1 × 3))

179: 2 × 4 ×(1 × 3)

180: (2 × 4) × (1 × 3)

181: 2 × 4 ÷ 1 × 3

182: (2 × 4) ÷ 1 × 3

183: (2 × 4 ÷ 1) × 3

184: ((2 × 4) ÷ 1) × 3

185: (2 × (4 ÷ 1)) × 3

186: 2 × (4 ÷ 1) × 3

187: 2 × (4 ÷ 1 × 3)

188: 2 × ((4 ÷ 1) × 3)

189: 2 × (4 ÷ (1 ÷ 3))

190: 2 × 4 ÷(1 ÷ 3)

191: (2 × 4) ÷ (1 ÷ 3)

192: (2 + 4) × (3 + 1)

193: 2 × 4 × 3 × 1

194: (2 × 4) × 3 × 1

195: (2 × 4 × 3) × 1

196: ((2 × 4) × 3) × 1

197: (2 × (4 × 3)) × 1

198: 2 × (4 × 3) × 1

199: 2 × (4 × 3 × 1)

200: 2 × ((4 × 3) × 1)

201: 2 × (4 × (3 × 1))

202: 2 × 4 ×(3 × 1)

203: (2 × 4) × (3 × 1)

204: 2 × 4 × 3 ÷ 1

205: (2 × 4) × 3 ÷ 1

206: (2 × 4 × 3) ÷ 1

207: ((2 × 4) × 3) ÷ 1

208: (2 × (4 × 3)) ÷ 1

209: 2 × (4 × 3) ÷ 1

210: 2 × (4 × 3 ÷ 1)

211: 2 × ((4 × 3) ÷ 1)

212: 2 × (4 × (3 ÷ 1))

213: 2 × 4 ×(3 ÷ 1)

214: (2 × 4) × (3 ÷ 1)

215: (3 + 1 + 2) × 4

216: ((3 + 1) + 2) × 4

217: (3 + (1 + 2)) × 4

218: (3 + 1) × (2 + 4)

219: 3 × 1 × 2 × 4

220: (3 × 1) × 2 × 4

221: (3 × 1 × 2) × 4

222: ((3 × 1) × 2) × 4

223: (3 × (1 × 2)) × 4

224: 3 × (1 × 2) × 4

225: 3 × (1 × 2 × 4)

226: 3 × ((1 × 2) × 4)

227: 3 × (1 × (2 × 4))

228: 3 × 1 ×(2 × 4)

229: (3 × 1) × (2 × 4)

230: 3 ÷ 1 × 2 × 4

231: (3 ÷ 1) × 2 × 4

232: (3 ÷ 1 × 2) × 4

233: ((3 ÷ 1) × 2) × 4

234: 3 ÷ 1 ×(2 × 4)

235: (3 ÷ 1) × (2 × 4)

236: (3 ÷ (1 ÷ 2)) × 4

237: 3 ÷ (1 ÷ 2) × 4

238: 3 ÷ (1 ÷ (2 × 4))

239: 3 ÷ (1 ÷ 2 ÷ 4)

240: 3 ÷ ((1 ÷ 2) ÷ 4)

241: (3 + 1) × (4 + 2)

242: 3 × 1 × 4 × 2

243: (3 × 1) × 4 × 2

244: (3 × 1 × 4) × 2

245: ((3 × 1) × 4) × 2

246: (3 × (1 × 4)) × 2

247: 3 × (1 × 4) × 2

248: 3 × (1 × 4 × 2)

249: 3 × ((1 × 4) × 2)

250: 3 × (1 × (4 × 2))

251: 3 × 1 ×(4 × 2)

252: (3 × 1) × (4 × 2)

253: 3 ÷ 1 × 4 × 2

254: (3 ÷ 1) × 4 × 2

255: (3 ÷ 1 × 4) × 2

256: ((3 ÷ 1) × 4) × 2

257: 3 ÷ 1 ×(4 × 2)

258: (3 ÷ 1) × (4 × 2)

259: (3 ÷ (1 ÷ 4)) × 2

260: 3 ÷ (1 ÷ 4) × 2

261: 3 ÷ (1 ÷ (4 × 2))

262: 3 ÷ (1 ÷ 4 ÷ 2)

263: 3 ÷ ((1 ÷ 4) ÷ 2)

264: (3 + 2 + 1) × 4

265: ((3 + 2) + 1) × 4

266: (3 + (2 + 1)) × 4

267: 3 × 2 × 1 × 4

268: (3 × 2) × 1 × 4

269: (3 × 2 × 1) × 4

270: ((3 × 2) × 1) × 4

271: (3 × (2 × 1)) × 4

272: 3 × (2 × 1) × 4

273: 3 × (2 × 1 × 4)

274: 3 × ((2 × 1) × 4)

275: 3 × (2 × (1 × 4))

276: 3 × 2 ×(1 × 4)

277: (3 × 2) × (1 × 4)

278: 3 × 2 ÷ 1 × 4

279: (3 × 2) ÷ 1 × 4

280: (3 × 2 ÷ 1) × 4

281: ((3 × 2) ÷ 1) × 4

282: (3 × (2 ÷ 1)) × 4

283: 3 × (2 ÷ 1) × 4

284: 3 × (2 ÷ 1 × 4)

285: 3 × ((2 ÷ 1) × 4)

286: 3 × (2 ÷ (1 ÷ 4))

287: 3 × 2 ÷(1 ÷ 4)

288: (3 × 2) ÷ (1 ÷ 4)

289: 3 × 2 × 4 × 1

290: (3 × 2) × 4 × 1

291: (3 × 2 × 4) × 1

292: ((3 × 2) × 4) × 1

293: (3 × (2 × 4)) × 1

294: 3 × (2 × 4) × 1

295: 3 × (2 × 4 × 1)

296: 3 × ((2 × 4) × 1)

297: 3 × (2 × (4 × 1))

298: 3 × 2 ×(4 × 1)

299: (3 × 2) × (4 × 1)

300: 3 × 2 × 4 ÷ 1

301: (3 × 2) × 4 ÷ 1

302: (3 × 2 × 4) ÷ 1

303: ((3 × 2) × 4) ÷ 1

304: (3 × (2 × 4)) ÷ 1

305: 3 × (2 × 4) ÷ 1

306: 3 × (2 × 4 ÷ 1)

307: 3 × ((2 × 4) ÷ 1)

308: 3 × (2 × (4 ÷ 1))

309: 3 × 2 ×(4 ÷ 1)

310: (3 × 2) × (4 ÷ 1)

311: 3 × 4 × 1 × 2

312: (3 × 4) × 1 × 2

313: (3 × 4 × 1) × 2

314: ((3 × 4) × 1) × 2

315: (3 × (4 × 1)) × 2

316: 3 × (4 × 1) × 2

317: 3 × (4 × 1 × 2)

318: 3 × ((4 × 1) × 2)

319: 3 × (4 × (1 × 2))

320: 3 × 4 ×(1 × 2)

321: (3 × 4) × (1 × 2)

322: 3 × 4 ÷ 1 × 2

323: (3 × 4) ÷ 1 × 2

324: (3 × 4 ÷ 1) × 2

325: ((3 × 4) ÷ 1) × 2

326: (3 × (4 ÷ 1)) × 2

327: 3 × (4 ÷ 1) × 2

328: 3 × (4 ÷ 1 × 2)

329: 3 × ((4 ÷ 1) × 2)

330: 3 × (4 ÷ (1 ÷ 2))

331: 3 × 4 ÷(1 ÷ 2)

332: (3 × 4) ÷ (1 ÷ 2)

333: 3 × 4 × 2 × 1

334: (3 × 4) × 2 × 1

335: (3 × 4 × 2) × 1

336: ((3 × 4) × 2) × 1

337: (3 × (4 × 2)) × 1

338: 3 × (4 × 2) × 1

339: 3 × (4 × 2 × 1)

340: 3 × ((4 × 2) × 1)

341: 3 × (4 × (2 × 1))

342: 3 × 4 ×(2 × 1)

343: (3 × 4) × (2 × 1)

344: 3 × 4 × 2 ÷ 1

345: (3 × 4) × 2 ÷ 1

346: (3 × 4 × 2) ÷ 1

347: ((3 × 4) × 2) ÷ 1

348: (3 × (4 × 2)) ÷ 1

349: 3 × (4 × 2) ÷ 1

350: 3 × (4 × 2 ÷ 1)

351: 3 × ((4 × 2) ÷ 1)

352: 3 × (4 × (2 ÷ 1))

353: 3 × 4 ×(2 ÷ 1)

354: (3 × 4) × (2 ÷ 1)

355: 4 × (1 + 2 + 3)

356: 4 × ((1 + 2) + 3)

357: 4 × (1 + (2 + 3))

358: 4 × 1 × 2 × 3

359: (4 × 1) × 2 × 3

360: (4 × 1 × 2) × 3

361: ((4 × 1) × 2) × 3

362: (4 × (1 × 2)) × 3

363: 4 × (1 × 2) × 3

364: 4 × (1 × 2 × 3)

365: 4 × ((1 × 2) × 3)

366: 4 × (1 × (2 × 3))

367: 4 × 1 ×(2 × 3)

368: (4 × 1) × (2 × 3)

369: 4 ÷ 1 × 2 × 3

370: (4 ÷ 1) × 2 × 3

371: (4 ÷ 1 × 2) × 3

372: ((4 ÷ 1) × 2) × 3

373: 4 ÷ 1 ×(2 × 3)

374: (4 ÷ 1) × (2 × 3)

375: (4 ÷ (1 ÷ 2)) × 3

376: 4 ÷ (1 ÷ 2) × 3

377: 4 ÷ (1 ÷ (2 × 3))

378: 4 ÷ (1 ÷ 2 ÷ 3)

379: 4 ÷ ((1 ÷ 2) ÷ 3)

380: 4 × (1 + 3 + 2)

381: 4 × ((1 + 3) + 2)

382: 4 × (1 + (3 + 2))

383: 4 × 1 × 3 × 2

384: (4 × 1) × 3 × 2

385: (4 × 1 × 3) × 2

386: ((4 × 1) × 3) × 2

387: (4 × (1 × 3)) × 2

388: 4 × (1 × 3) × 2

389: 4 × (1 × 3 × 2)

390: 4 × ((1 × 3) × 2)

391: 4 × (1 × (3 × 2))

392: 4 × 1 ×(3 × 2)

393: (4 × 1) × (3 × 2)

394: 4 ÷ 1 × 3 × 2

395: (4 ÷ 1) × 3 × 2

396: (4 ÷ 1 × 3) × 2

397: ((4 ÷ 1) × 3) × 2

398: 4 ÷ 1 ×(3 × 2)

399: (4 ÷ 1) × (3 × 2)

400: (4 ÷ (1 ÷ 3)) × 2

401: 4 ÷ (1 ÷ 3) × 2

402: 4 ÷ (1 ÷ (3 × 2))

403: 4 ÷ (1 ÷ 3 ÷ 2)

404: 4 ÷ ((1 ÷ 3) ÷ 2)

405: (4 + 2) × (1 + 3)

406: 4 × (2 + 1 + 3)

407: 4 × ((2 + 1) + 3)

408: 4 × (2 + (1 + 3))

409: 4 × 2 × 1 × 3

410: (4 × 2) × 1 × 3

411: (4 × 2 × 1) × 3

412: ((4 × 2) × 1) × 3

413: (4 × (2 × 1)) × 3

414: 4 × (2 × 1) × 3

415: 4 × (2 × 1 × 3)

416: 4 × ((2 × 1) × 3)

417: 4 × (2 × (1 × 3))

418: 4 × 2 ×(1 × 3)

419: (4 × 2) × (1 × 3)

420: 4 × 2 ÷ 1 × 3

421: (4 × 2) ÷ 1 × 3

422: (4 × 2 ÷ 1) × 3

423: ((4 × 2) ÷ 1) × 3

424: (4 × (2 ÷ 1)) × 3

425: 4 × (2 ÷ 1) × 3

426: 4 × (2 ÷ 1 × 3)

427: 4 × ((2 ÷ 1) × 3)

428: 4 × (2 ÷ (1 ÷ 3))

429: 4 × 2 ÷(1 ÷ 3)

430: (4 × 2) ÷ (1 ÷ 3)

431: (4 + 2) × (3 + 1)

432: 4 × (2 + 3 + 1)

433: 4 × ((2 + 3) + 1)

434: 4 × (2 + (3 + 1))

435: 4 × 2 × 3 × 1

436: (4 × 2) × 3 × 1

437: (4 × 2 × 3) × 1

438: ((4 × 2) × 3) × 1

439: (4 × (2 × 3)) × 1

440: 4 × (2 × 3) × 1

441: 4 × (2 × 3 × 1)

442: 4 × ((2 × 3) × 1)

443: 4 × (2 × (3 × 1))

444: 4 × 2 ×(3 × 1)

445: (4 × 2) × (3 × 1)

446: 4 × 2 × 3 ÷ 1

447: (4 × 2) × 3 ÷ 1

448: (4 × 2 × 3) ÷ 1

449: ((4 × 2) × 3) ÷ 1

450: (4 × (2 × 3)) ÷ 1

451: 4 × (2 × 3) ÷ 1

452: 4 × (2 × 3 ÷ 1)

453: 4 × ((2 × 3) ÷ 1)

454: 4 × (2 × (3 ÷ 1))

455: 4 × 2 ×(3 ÷ 1)

456: (4 × 2) × (3 ÷ 1)

457: 4 × (3 + 1 + 2)

458: 4 × ((3 + 1) + 2)

459: 4 × (3 + (1 + 2))

460: 4 × 3 × 1 × 2

461: (4 × 3) × 1 × 2

462: (4 × 3 × 1) × 2

463: ((4 × 3) × 1) × 2

464: (4 × (3 × 1)) × 2

465: 4 × (3 × 1) × 2

466: 4 × (3 × 1 × 2)

467: 4 × ((3 × 1) × 2)

468: 4 × (3 × (1 × 2))

469: 4 × 3 ×(1 × 2)

470: (4 × 3) × (1 × 2)

471: 4 × 3 ÷ 1 × 2

472: (4 × 3) ÷ 1 × 2

473: (4 × 3 ÷ 1) × 2

474: ((4 × 3) ÷ 1) × 2

475: (4 × (3 ÷ 1)) × 2

476: 4 × (3 ÷ 1) × 2

477: 4 × (3 ÷ 1 × 2)

478: 4 × ((3 ÷ 1) × 2)

479: 4 × (3 ÷ (1 ÷ 2))

480: 4 × 3 ÷(1 ÷ 2)

481: (4 × 3) ÷ (1 ÷ 2)

482: 4 × (3 + 2 + 1)

483: 4 × ((3 + 2) + 1)

484: 4 × (3 + (2 + 1))

485: 4 × 3 × 2 × 1

486: (4 × 3) × 2 × 1

487: (4 × 3 × 2) × 1

488: ((4 × 3) × 2) × 1

489: (4 × (3 × 2)) × 1

490: 4 × (3 × 2) × 1

491: 4 × (3 × 2 × 1)

492: 4 × ((3 × 2) × 1)

493: 4 × (3 × (2 × 1))

494: 4 × 3 ×(2 × 1)

495: (4 × 3) × (2 × 1)

496: 4 × 3 × 2 ÷ 1

497: (4 × 3) × 2 ÷ 1

498: (4 × 3 × 2) ÷ 1

499: ((4 × 3) × 2) ÷ 1

500: (4 × (3 × 2)) ÷ 1

501: 4 × (3 × 2) ÷ 1

502: 4 × (3 × 2 ÷ 1)

503: 4 × ((3 × 2) ÷ 1)

504: 4 × (3 × (2 ÷ 1))

505: 4 × 3 ×(2 ÷ 1)

506: (4 × 3) × (2 ÷ 1)

1: 8 × (9 ÷ (10 - 7))

2: 8 × 9 ÷(10 - 7)

3: (8 × 9) ÷ (10 - 7)

4: (8 ÷ (10 - 7)) × 9

5: 8 ÷ (10 - 7) × 9

6: 8 ÷ ((10 - 7) ÷ 9)

7: 9 × (8 ÷ (10 - 7))

8: 9 × 8 ÷(10 - 7)

9: (9 × 8) ÷ (10 - 7)

10: (9 ÷ (10 - 7)) × 8

11: 9 ÷ (10 - 7) × 8

12: 9 ÷ ((10 - 7) ÷ 8)

1.(5*8+8)/2

2.1*2*3*4

3.8*9/(10-7)