1. $\begin{array}{r}
&82\\
+\!\!\!\!\!\,&16\\
\hline
\end{array}$
Answer: 98
Explanation:
$\begin{array}{l}
82 + 16 &= 82 + (10 + 6)\\
&= 92 + 6\\
&= 98
\end{array}$
2. $\begin{array}{r}
&67\\
+\!\!\!\!\!\,&24\\
\hline
\end{array}$
Answer: 91
Explanation:
$\begin{array}{l}
67 + 24 &= 67 + (20 + 4)\\
&= 87 + 4\\
&= 91
\end{array}$
3. $\begin{array}{r}
&57\\
+\!\!\!\!\!\,&27\\
\hline
\end{array}$
Answer: 84
Explanation:
$\begin{array}{l}
57 + 27 &= 57 + (20 + 7)\\[6px]
&= 77 + 7\\[6px]
&= 84
\end{array}$
4. $\begin{array}{r}
&58\\
+\!\!\!\!\!\,&34\\
\hline
\end{array}$
Answer: 92
Explanation:
$\begin{array}{l}
58 + 34 &= 58 + (30 + 4)\\[6px]
&= 88 + 4\\[6px]
&= 92
\end{array}$
5. $\begin{array}{r}
&46\\
+\!\!\!\!\!\,&37\\
\hline
\end{array}$
Answer: 84
Explanation:
$\begin{array}{l}
46 + 37 &= 46 + (30 + 7)\\[6px]
&= 76 + 7\\[6px]
&= 84
\end{array}$
6. $\begin{array}{r}
&28\\
+\!\!\!\!\!\,&37\\
\hline
\end{array}$
Answer: 81
Explanation:
$\begin{array}{l}
28 + 37 &= 28 + (30 + 7)\\[6px]
&= 58 + 7\\[6px]
&= 65
\end{array}$
7. $\begin{array}{r}
&69\\
+\!\!\!\!\!\,&18\\
\hline
\end{array}$
Answer: 87
Explanation:
$\begin{array}{l}
69 + 18 &= 69 + (10 + 8)\\[6px]
&= 79 + 8\\[6px]
&= 87
\end{array}$
8. $\begin{array}{r}
&47\\
+\!\!\!\!\!\,&14\\
\hline
\end{array}$
Answer: 61
Explanation:
$\begin{array}{l}
47 + 14 &= 47 + (10 + 4)\\[6px]
&= 57 + 4\\[6px]
&= 61
\end{array}$
9. $\begin{array}{r}
&28\\
+\!\!\!\!\!\,&48\\
\hline
\end{array}$
Answer: 76
Explanation:
$\begin{array}{l}
28 + 48 &= 28 + (40 + 8)\\[6px]
&= 68 + 8\\[6px]
&= 76
\end{array}$
10. $\begin{array}{r}
&55\\
+\!\!\!\!\!\,&37\\
\hline
\end{array}$
Answer: 92
Explanation:
$\begin{array}{l}
55 + 37 &= 55 + (30 + 7)\\[6px]
&= 85 + 7\\[6px]
&= 92
\end{array}$