Find the answer by solving the problem.

If there are several objects at the beginning of the problem, and then several more appear, you need to add two numbers.

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Math helps people to live. Otherwise, how could they identify if they have enough money for ice cream, how much bread to buy for dinner, so that everyone has enough, and how many days are towards the holidays? You learn to find answers every day, solving different problems with the help of math knowledge.

To feed fish in an aquarium, you need to find out their number. After all, if you give them less food than they need, they will remain hungry. And if you overfeed them, they will feel bad. Here are big and small fish in the aquarium. 

How many big ones? 2. And how many small ones? 3. How do we find out their amount? Add 3 to 2. So we found that there are 5 fish in the aquarium: 2+3=5.

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