Wykonajmy obliczenia.

a)

$\begin{array}{r}58\\ \underline{+21}\\ 79\end{array}$

---

b)

$\begin{array}{r}37\\ \underline{+42}\\ 79\end{array}$

---

c)

$\begin{array}{r}45\\ \underline{+53}\\ 98\end{array}$

---

d)

$\begin{array}{r}56\\ \underline{+32}\\ 88\end{array}$

---

e)

$\begin{array}{r}131\\ \underline{+37}\\ 168\end{array}$

---

f)

$\begin{array}{r}963\\ \underline{+36}\\ 999\end{array}$

---

g)

$\begin{array}{r}607\\ \underline{+81}\\ 688\end{array}$

---

h)

$\begin{array}{r}751\\ \underline{+47}\\ 798\end{array}$