8 x 15 cm =
15 x 39 km =
81 mm: 9 =
56 hm: 8 =
870 dam + 539 dam - 145 dam =
6 043 mm -1 342 mm + 27 mm =
25 km x 75 + 1 307 km - 493 km =
2 700 dm - 15 dm x 49 + 12 dm x 36 =
840 cm - 72 cm : 8-34 x 12 cm + 56 cm : 7 =
853 m + 81 m: 9 - 12 m: 4 x 156 =​