Explain why the operation fits practice check

Q: What will my child learn in "Explain why the operation fits"?

We use addition to find a total when we put two or more groups of things together. This 2nd Grade Math lesson builds the skill Choose the correct operation in one-step stories with a concept card and practice.

Q: What grade level is "Explain why the operation fits" for?

"Explain why the operation fits" is a 2nd Grade Math lesson in the Mixed Operations unit, designed for students around ages 7-8.

Q: How many practice questions are in this lesson?

This lesson includes 65 practice questions with instant feedback. Guests can try a few for free, and signed-in learners get the full adaptive set that adjusts to their level.

Q: How does Sparq help with "Explain why the operation fits"?

Sparq is a safe AI tutor that gives kid-friendly hints and explains Explain why the operation fits step by step, helping students learn without just giving away the answer.

Q: Do I need an account to practice "Explain why the operation fits"?

No account is needed to start — guests can try this 2nd Grade Math lesson for free. Signing in saves progress, unlocks more practice questions, and tracks mastery.

Question 1

A teacher has 12 red pens and 8 blue pens. Why is 12 + 8 used to find the total number of pens?

Accepted Answer

Because two groups are being joined together

Answer

Because some pens were lost

Answer

Because the pens are in equal groups

Answer

Because we are sharing the pens

Question 2

Leo has 20 toy cars. He gives 5 cars to a friend. Why does 20 − 5 fit this story?

Accepted Answer

Because a part is being taken away from the total

Answer

Because he is getting more cars

Answer

Because he has equal groups of cars

Answer

Because he is joining two groups

Question 3

Look at the picture. Why can we use multiplication to find the total number of stars?

Accepted Answer

Because there are equal groups being counted together

Answer

Because some stars are being taken away

Answer

Because the groups are all different sizes

Answer

Because we are splitting the stars into two piles

Question 4

Why does a story about 15 stickers shared equally among 5 friends use division?

Accepted Answer

Because the total is split into equal groups

Explain why the operation fits

Joining Groups Together