Operations & Algebraic Thinking

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1st Grade Math › Operations & Algebraic Thinking

Questions 1 - 10

1

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

Explanation

To add we count up. Start at and count up .

$\frac{\begin{array}[b]{r}3\ +\ 3\end{array}}{ \ \ \ \space6}$

2

$\frac{\begin{array}[b]{r}9\ +\ 10\end{array}}{ \ \ \space?}$

Explanation

To add we count up. Start at and count up .

$\frac{\begin{array}[b]{r}9\ +\ 10\end{array}}{ \ \ \ \space19}$

3

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

Explanation

To add we count up. Start at and count up .

$\frac{\begin{array}[b]{r}1\ +\ 1\end{array}}{ \ \ \ \space2}$

4

$\frac{\begin{array}[b]{r}11\ +\ 4\end{array}}{ \ \ \space?}$

Explanation

To add we count up. Start at and count up .

$\frac{\begin{array}[b]{r}11\ +\ 4\end{array}}{ \ \ \space15}$

5

Which of the equations is TRUE?

Explanation

Both and equal . So these two equations equal each other. , , and . Because none of these equations equal , they can’t be equal to .

6

Which of the equations is TRUE?

Explanation

When you add and together you get . does not equal because . does not equal because . does not equal because .

7

$\frac{\begin{array}[b]{r}14\ -\ 11\end{array}}{ \ \ \ \space ?}$

Explanation

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

$\frac{\begin{array}[b]{r}14\ -\ 11\end{array}}{ \ \ \ \ \space 3}$

8

Which of the equations is TRUE?

Explanation

Both and equal . So these two equations equal each other. , , and . Because none of these equations equal , they can’t be equal to .

9

Which of the equations is TRUE?

Explanation

When you subtract from you get . does not equal because . does not equal because . does not equal because .

10

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

Explanation

To add we count up. Start at and count up .

$\frac{\begin{array}[b]{r}5\ +\ 3\end{array}}{ \ \ \ \space8}$

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