Given:

mm⋅MN

Calculation:

Convert the quantities.

  mm⋅MN=(1 mm×1 m103 mm)⋅(1 MN×(103) kN1 MN)mm⋅MN=1(103)m⋅(103)kN=kN⋅m

Thus, the correct SI form for mm⋅MN is kN⋅m_.

Given:

Mg/mm

Calculation:

Convert the quantities.

  Mg/mm=(Mg×1 Gg103 Mg)/((1 mm×1 m103 mm))=103  Gg103 m=Gg/m

Thus, the correct SI form for Mg/mm is Gg/m_.

Given:

km/ms

Calculation:

Convert the quantities.

  km/ms=(1 km×1 Mm103 km)/((1 ms×1 s103 ms))=103  Mm103 s=Mm/s

Thus, the correct SI form for km/ms is Mm/s_.

Given:

kN/mm2

Calculation:

Convert the quantities.

  kN/mm2=(1 kN×1 GN106 kN)/(((1 mm)2×1 m2106 mm2))=106  GN106 m2=GN/m2

Thus, the correct SI form for kN/mm2 is GN/m2_.