Question

adding 2-digit and 1-digit numbers
find the sum.
1)
\

$$\begin{array}{r}\\stackrel{1}{3}7\\\\+\\ \\ \\ 7\\\\\\hline 44\\end{array}$$

2)
\

$$\begin{array}{r}20\\\\+\\ \\ \\ 7\\\\\\hline 27\\end{array}$$

3)
\

$$\begin{array}{r}\\stackrel{1}{8}4\\\\+\\ \\ \\ 6\\\\\\hline 90\\end{array}$$

4)
\

$$\begin{array}{r}55\\\\+\\ \\ \\ 4\\\\\\hline \\ \\ \\ \\end{array}$$

5)
\

$$\begin{array}{r}\\stackrel{1}{8}7\\\\+\\ \\ \\ 6\\\\\\hline 93\\end{array}$$

6)
\

$$\begin{array}{r}10\\\\+\\ \\ \\ 3\\\\\\hline 13\\end{array}$$

7)
\

$$\begin{array}{r}48\\\\+\\ \\ \\ 5\\\\\\hline \\ \\ \\ \\end{array}$$

8)
\

$$\begin{array}{r}47\\\\+\\ \\ \\ 5\\\\\\hline \\ \\ \\ \\end{array}$$

9)
\

$$\begin{array}{r}52\\\\+\\ \\ \\ 6\\\\\\hline \\ \\ \\ \\end{array}$$

10)
\

$$\begin{array}{r}93\\\\+\\ \\ \\ 1\\\\\\hline \\ \\ \\ \\end{array}$$

11)
\

$$\begin{array}{r}74\\\\+\\ \\ \\ 1\\\\\\hline \\ \\ \\ \\end{array}$$

12)
\

$$\begin{array}{r}80\\\\+\\ \\ \\ 8\\\\\\hline \\ \\ \\ \\end{array}$$

13)
\

$$\begin{array}{r}45\\\\+\\ \\ \\ 5\\\\\\hline \\ \\ \\ \\end{array}$$

14)
\

$$\begin{array}{r}23\\\\+\\ \\ \\ 9\\\\\\hline \\ \\ \\ \\end{array}$$

15)
\

$$\begin{array}{r}41\\\\+\\ \\ \\ 4\\\\\\hline \\ \\ \\ \\end{array}$$

16)
\

$$\begin{array}{r}50\\\\+\\ \\ \\ 3\\\\\\hline 53\\end{array}$$

17)
\

$$\begin{array}{r}34\\\\+\\ \\ \\ 6\\\\\\hline \\ \\ \\ \\end{array}$$

18)
\

$$\begin{array}{r}96\\\\+\\ \\ \\ 6\\\\\\hline \\ \\ \\ \\end{array}$$

19)
\

$$\begin{array}{r}29\\\\+\\ \\ \\ 7\\\\\\hline \\ \\ \\ \\end{array}$$

20)
\

$$\begin{array}{r}44\\\\+\\ \\ \\ 5\\\\\\hline \\ \\ \\ \\end{array}$$

Explanation:

Problem 4:

Step1: Add the ones place: \( 5 + 4 = 9 \)

Step2: The tens place remains 5. So the sum is \( 55 + 4 = 59 \)

Step1: Add the ones place: \( 0 + 3 = 3 \)

Step2: The tens place remains 1. So the sum is \( 10 + 3 = 13 \)

Step1: Add the ones place: \( 8 + 5 = 13 \). Write down 3, carry over 1.

Step2: Add the tens place with the carry over: \( 4 + 1 = 5 \). So the sum is \( 48 + 5 = 53 \)

Answer:

59

Problem 6: