Use the number strip to find the answer.

$0$

$1$

$2$

$3$

$4$

$5$

$6$

$7$

$8$

$9$

$10$

$11$

$12$

$13$

$14$

$\begin{array}{cc}& 8\\ +& 3\\ & \end{array}$

Add vertically:

Three boys come to the front of the class.

Two girls join the group.

Now how many are they$?$

Add the following numbers.

$4+3=$_____

$3+4=$_____

Add by drawing lines.

$$\begin{gathered} \left|\right|| |\left|\right|\left|\right| \\ 3 + 5=\boxed{ } \end{gathered}$$

Add vertically:

Add vertically:

Add.

$\begin{array}{cc}& 3\\ +& 6\\ & \end{array}$

Add the following numbers.

$7+2=$_____

$2+7=$_____

Add vertically:

Add the numbers:

$\begin{array}{cccc}& & \mathrm{T}& \mathrm{O}\\ & & & 9\\ & +& & 4\\ & & & \end{array}$

Add one and write the correct number on the ladder.

$6$ and $1$ more is $\_\_\_.$

Add one and write the correct number on the ladder.

$5$ and $1$ more is $\_\_\_.$

Add one to the number and write the correct number on the ladder.

$8$ and $1$ more is $\_\_\_.$

Three girls come to the front of the class.

Two boys join the group.

Now how many are they$?$

Three boys come to the front of the class.

Two girls join the group.

Now how many are they$?$

Are both groups equal$?$

What does this show$?$

Add the following numbers.

$5+3=$____

$3+5=$____

Add vertically:

$\underline{\begin{array}{cc}& 4\\ +& 0\\ & \end{array}}$

Add the following numbers.

$5+4=$_____

$4+5=$_____

Add one and write the correct number.

$9$ and $1$ more is $\_\_\_.$

Add one and write the correct number on the ladder.

$7$ and $1$ more is $\_\_\_.$