Representing and Solving Addition and Subtraction Problems

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1st Grade Math › Representing and Solving Addition and Subtraction Problems

Questions 1 - 10

Jessica’s dog eats three times a day. In the morning he eats cups of food, in the afternoon he eats cup of food, and in the evening he eats cups of food. How many total cups of food does Jessica’s dog eat each day?

Explanation

This is an addition problem because we want to know how many cups of food Jessica's dog gets altogether in a day. When we put things together we are adding.

We can start at and count up .

Then we can count up .

$\frac{\begin{array}[b]{r}2\ 1\+\ 3\end{array}}{ \ \ \ \space 6}$

Explanation

This is an addition problem because we want to know how many cups of food Jessica's dog gets altogether in a day. When we put things together we are adding.

We can start at and count up .

Then we can count up .

$\frac{\begin{array}[b]{r}2\ 1\+\ 3\end{array}}{ \ \ \ \space 6}$

At the dog park there are brown dogs, white dogs, and black dog. How many dogs are at the park?

Explanation

This is an addition problem because we want to know how many total dogs are at the park altogether. When we put things together we are adding.

We can start at and count up .

Then we can count up .

$\frac{\begin{array}[b]{r}5\ 3\+\ 1\end{array}}{ \ \ \ \space 9}$

At the dog park there are brown dogs, white dogs, and black dog. How many dogs are at the park?

Explanation

This is an addition problem because we want to know how many total dogs are at the park altogether. When we put things together we are adding.

We can start at and count up .

Then we can count up .

$\frac{\begin{array}[b]{r}5\ 3\+\ 1\end{array}}{ \ \ \ \space 9}$

Lauren has pencils, markers, and notebooks in her backpack. How many total items does Lauren have in her backpack?

Explanation

This is an addition problem because we want to know how many total supplies Lauren has in her backpack when we put everything together. When we put things together we are adding.

We can start at and count up .

Then we can count up .

$\frac{\begin{array}[b]{r}3\ 2\+\ 4\end{array}}{ \ \ \ \space 9}$

Lauren has pencils, markers, and notebooks in her backpack. How many total items does Lauren have in her backpack?

Explanation

This is an addition problem because we want to know how many total supplies Lauren has in her backpack when we put everything together. When we put things together we are adding.

We can start at and count up .

Then we can count up .

$\frac{\begin{array}[b]{r}3\ 2\+\ 4\end{array}}{ \ \ \ \space 9}$

A bag of marbles has purple marbles, black marbles, and red marbles. How many marbles are in the bag?

Explanation

This is an addition problem because we want to know how many total marbles are in the bag when we put the colors together. When we put things together we are adding.

We can start at and count up .

Then we can count up .

$\frac{\begin{array}[b]{r}2\ 3\+\ 6\end{array}}{ \ \ \space 11}$

A bag of marbles has purple marbles, black marbles, and red marbles. How many marbles are in the bag?

Explanation

This is an addition problem because we want to know how many total marbles are in the bag when we put the colors together. When we put things together we are adding.

We can start at and count up .

Then we can count up .

$\frac{\begin{array}[b]{r}2\ 3\+\ 6\end{array}}{ \ \ \space 11}$

Lindsey’s family is going on vacation. She packs bags, her dad packs bag, and her mom packs bags. How many total bags are they taking on their vacation?

Explanation

This is an addition problem because we want to know how many total bags the family has altogether. When we put things together we are adding.

We can start at and count up .

Then we can count up .

$\frac{\begin{array}[b]{r}2\ 1\+\ 4\end{array}}{ \ \ \ \space 7}$

For a project, Tim needs pieces of blue paper, pieces of yellow paper, and pieces of green paper. How many pieces of paper does Tim need?

Explanation

This is an addition problem because we want to know how many pieces of paper Tim needs when we put the three colors together. When we put things together we are adding.

We can start at and count up .