1. $\begin{array}{r}
&22\\
+\!\!\!\!\!\,&34\\
\hline
\end{array}$
Answer: 56
Explanation:
$\begin{array}{l}
22 + 34 &= 22 + (30 + 4)\\
&= 52 + 4\\
&= 56
\end{array}$
2. $\begin{array}{r}
&43\\
+\!\!\!\!\!\,&34\\
\hline
\end{array}$
Answer: 77
Explanation:
$\begin{array}{l}
43 + 34 &= 43 + (30 + 4)\\
&= 73 + 4\\
&= 77
\end{array}$
3. $\begin{array}{r}
&29\\
+\!\!\!\!\!\,&17\\
\hline
\end{array}$
Answer: 46
Explanation:
$\begin{array}{l}
29 + 17 &= 29 + (10 + 7)\\[6px]
&= 39 + 7\\[6px]
&= 46
\end{array}$
4. $\begin{array}{r}
&45\\
+\!\!\!\!\!\,&17\\
\hline
\end{array}$
Answer: 62
Explanation:
$\begin{array}{l}
45 + 17 &= 45 + (10 + 7)\\[6px]
&= 55 + 7\\[6px]
&= 62
\end{array}$
5. $\begin{array}{r}
&18\\
+\!\!\!\!\!\,&35\\
\hline
\end{array}$
Answer: 53
Explanation:
$\begin{array}{l}
18 + 35 &= 18 + (30 + 5)\\[6px]
&= 48 + 5\\[6px]
&= 53
\end{array}$
6. $\begin{array}{r}
&16\\
+\!\!\!\!\!\,&35\\
\hline
\end{array}$
Answer: 51
Explanation:
$\begin{array}{l}
16 + 35 &= 16 + (30 + 5)\\[6px]
&= 46 + 5\\[6px]
&= 51
\end{array}$
7. $\begin{array}{r}
&19\\
+\!\!\!\!\!\,&63\\
\hline
\end{array}$
Answer: 82
Explanation:
$\begin{array}{l}
19 + 63 &= 19 + (60 + 3)\\[6px]
&= 79 + 3\\[6px]
&= 82
\end{array}$
8. $\begin{array}{r}
&48\\
+\!\!\!\!\!\,&24\\
\hline
\end{array}$
Answer: 72
Explanation:
$\begin{array}{l}
48 + 24 &= 48 + (20 + 4)\\[6px]
&= 68 + 4\\[6px]
&= 72
\end{array}$
9. $\begin{array}{r}
&34\\
+\!\!\!\!\!\,&48\\
\hline
\end{array}$
Answer: 82
Explanation:
$\begin{array}{l}
34 + 48 &= 34 + (40 + 8)\\[6px]
&= 74 + 8\\[6px]
&= 82
\end{array}$
10. $\begin{array}{r}
&35\\
+\!\!\!\!\!\,&47\\
\hline
\end{array}$
Answer: 82
Explanation:
$\begin{array}{l}
35 + 47 &= 35 + (40 + 7)\\[6px]
&= 75 + 7\\[6px]
&= 82
\end{array}$