¯ 1¯
74 834
× 3 8× 9 × 9×
≈ 74 × 38 ≈ 834 × 9
761 ¯2
5×
43
915 4×
3 2×
278
126 × 18 5 5×
507 × 6
¯ ¯ ¯¯ ¯3
¯¯
110 ¯ , 24 ¯ 6
¯ ? ¯ ¯ 48 × 289 ¯ 4
:¯ 139 × 18 ¯ ¯ 5
6
¯ 139 × 18 139 × 18
100 × 20 ≈ 140 × 20 ≈
77
2 000 = 2 800 =
¯ ¯ï ¯ ¯,
413 × 96 ¯ ?¯