contestada

could anyone answer these for me?


9/10 cm + ?? = 1 cm


0.9 cm + ?? = 1.0 cm

4/10 cm + ?? = 1 cm

0.4 cm + ?? = 1.0 cm

Respuesta :

1) 1/10 cm
2) 0.1 cm
3) 6/10 cm
4) 0.6 cm