A baby increases in weight from 5.58 kg to 6.16 kg. How much weight has the baby gained?

Given:

New weight = 6.16 kg

Previous weight = 5.58 kg

Weight gained = ?

∴ Weight gained = (New weight) - (Previous weight)

Substituting the values in above, we get:

Weight gained = 6.16 kg - 5.58 kg

Subtracting columnwise, we get:

$\begin{array}{r} 6.16 \ -5.58 \ \hline 0.58 \ \hline \end{array}$

Hence, the baby has gained 0.58 kg