Estimate the approximate number of objects. Guess how many items there are. You don't have to be completely accurate in your guess, but the closer you get to the correct answer, the better you estimate the quantity.

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Can you tell how many buttons are there without counting them? Let's say there are about 30 of them. What do you think? What's your number?

How will you decide which number to choose? Let's think together. We can see the buttons in 3 rows. Can you guess how many buttons are in the longest row? Let's say there are about 10 buttons. How did we get this? We can find 3 sets of 3 buttons in this row. It's about 10.

There are about 10 buttons in the first row and fewer in the second, as the line is incomplete and some places are empty. The same situation is with the third row. So, we conclude there are about 30 buttons in total, and even less - around 26. Let's check? Memorize your number to determine who was closer to the correct answer.

There were 10 buttons in the first row. We were right! And what about the second row? It lacks 2 to 10, and the third row lacks 3 buttons to a full ten. If we had 3 complete rows of 10 buttons, that would be 30, as we assumed at the beginning. It is a correct thought because only 5 buttons are missing up to 30.

We have also denoted there are less than 30 buttons. We have almost guessed, as there are 25 buttons in total. Congratulations!

And here are the clouds. Guess how many there are.

 There are certainly more than five clouds, as the ones on the left are close to each other, and we can see five clouds there. 

There is the same number of clouds on the right, and even more. It means there are about 10 clouds in total, but no more than 15. Let's check it out!

We can see two groups of 5 clouds and 2 more clouds. We were right. 12 is not less than 10 and not greater than 15.

So, estimate means to find the approximate number of objects without counting them.

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