1) 334 - 286 + 166 = (334 - 286) + 166 = 48 + 166 = 2142) 518 - 135 - 265 = 518 - (135 + 265) = 518 - 400 = 1183) 20 399 50 = (20 50) 399 = 1000 399 = 3990004) 93 28 - 28 53 = 28 (93 - 53) = 28 * 40 = 1120
1) 334 - 286 + 166 = (334 - 286) + 166 = 48 + 166 = 214
2) 518 - 135 - 265 = 518 - (135 + 265) = 518 - 400 = 118
3) 20 399 50 = (20 50) 399 = 1000 399 = 399000
4) 93 28 - 28 53 = 28 (93 - 53) = 28 * 40 = 1120