285 - 28 : 4 + 9 × 5 - 150 =
= 285 - 7 + 45 - 150 = 278 + 45 - 150 = 323 - 150 = 173
10 × 26 - 18 × 5 + 16 : 2 =
= 260 - 90 + 8 = 170 + 8 = 178
1879 + 4 × 3 : 2 - 318 × 5 =
= 1879 + 12 : 2 - 1590 = 1879 + 6 - 1590 = 1885 - 1590 = 295
347 + 869 - 405 - 5 × 18 : 9 =
= 347 + 869 - 405 - 90 : 9 =
= 347 + 869 - 405 - 10 = 1216 - 405 - 10 = 811 - 10 = 801
56 : 7 × 25 + 38 × 10 × 9 - 1786 =
= 8 × 25 + 380 × 9 - 1786 =
= 200 + 3420 - 1786 = 3620 - 1786 = 1834
4505 - 15 × 34 + 70 : 7 + 48 =
= 4505 - 510 + 10 + 48 = 3995 + 10 + 48 = 4005 + 48 = 4053