Subtracting within 20

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1st Grade Math › Subtracting within 20

Questions 1 - 10

1

$\frac{\begin{array}[b]{r}5\ -\ 3\end{array}}{ \ \ \ \space?}$

Explanation

To subtract we can count backwards. Start at and count back .

$\frac{\begin{array}[b]{r}5\ -\ 3\end{array}}{ \ \ \ \space2}$

2

$\frac{\begin{array}[b]{r}16\ -\ 14\end{array}}{ \ \ \ \space?}$

Explanation

To subtract we can count backwards. Start at and count back

$\frac{\begin{array}[b]{r}16\ -\ 14\end{array}}{ \ \ \ \ \ \space2}$

3

$\frac{\begin{array}[b]{r}17\ -\ 12\end{array}}{ \ \ \ \space?}$

Explanation

To subtract we can count backwards. Start at and count back .

$\frac{\begin{array}[b]{r}17\ -\ 12\end{array}}{ \ \ \ \ \ \space5}$

4

$\frac{\begin{array}[b]{r}14\ -\ 2\end{array}}{ \ \ \ \space?}$

Explanation

To subtract we can count backwards. Start at and count back .

$\frac{\begin{array}[b]{r}14\ -\ 2\end{array}}{ \ \ \space12}$

5

$\frac{\begin{array}[b]{r}6\ -\ 5\end{array}}{ \ \ \ \space?}$

Explanation

To subtract we can count backwards. Start at and count back .

$\frac{\begin{array}[b]{r}6\ -\ 5\end{array}}{ \ \ \ \space1}$

6

$\frac{\begin{array}[b]{r}13\ -\ 6\end{array}}{ \ \ \ \space?}$

Explanation

To subtract we can count backwards. Start at and count back .

$\frac{\begin{array}[b]{r}13\ -\ 6\end{array}}{ \ \ \ \space7}$

7

$\frac{\begin{array}[b]{r}9\ -\ 1\end{array}}{ \ \ \ \space ?}$

Explanation

To subtract we can count backwards. Start at and count back .

$\frac{\begin{array}[b]{r}9\ -\ 1\end{array}}{ \ \ \ \space 8}$

8

$\frac{\begin{array}[b]{r}19\ -\ 2\end{array}}{ \ \ \ \space?}$

Explanation

To subtract we can count backwards. Start at and count back

$\frac{\begin{array}[b]{r}19\ -\ 2\end{array}}{ \ \ \space17}$

9

$\frac{\begin{array}[b]{r}10\ -\ 5\end{array}}{ \ \ \ \space?}$

Explanation

To subtract we can count backwards. Start at and count back

$\frac{\begin{array}[b]{r}10\ -\ 5\end{array}}{ \ \ \ \space5}$

10

$\frac{\begin{array}[b]{r}17\ -\ 2\end{array}}{ \ \ \ \space?}$

Explanation

To subtract we can count backwards. Start at and count back

$\frac{\begin{array}[b]{r}17\ -\ 2\end{array}}{ \ \ \space15}$

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