Specify the number using its numerical form:
1 - one 2 - two 3 - three 4 - four 5 - five
6 - six 7 - seven 8 - eight 9 - nine 10 - ten
Different nations have come to a single system of signs in different ways.
In ancient Egypt, numbers were written in hieroglyphs. They had only seven hieroglyphs for this. For example, the drawing of a toad denoted the number 100000 - one hundred thousand. If Egyptians needed to write 200000, they drew two toads.
The Maya tribe denoted numbers with sticks ___ and dots ... .
。 - this is 1 。。 - this is 2 。。。 - this is 3 。。。。 - this is 4
__ - this is 5 ∸ - this is 6 = - this is 10
What did the number 7 look like in such a notation? One horizontal stick and two dots above it: a stick is five, and two dots are two.
In ancient Greece and in ancient Rome, people denoted numbers using letters.
And finally, after many centuries, all countries started to use a single numbering, which came from India.
What sign will you use to designate one cake? And one butterfly? One elephant? We use the same sign for all these objects - 1. It does not matter whether the object is animated or not, whether it is large or small, edible or not - only the quantity is significant, and it is equal to 1.
We will designate three boots, three houses, and three bees with one sign - 3. It is very convenient because we do not need the image of the considered objects. All we need is the quantity.
There are a lot of objects in front of you. Here are the groups of bananas, books, and sweets. Choose a suitable number for these sets.
1. Count how many items are in each group. There are five bananas in the first group, five books in the second, and the same quantity of sweets in the third group. There are five objects in each group.
2. Identify what symbol we use to denote this quantity. We indicate the number five by the sign - 5.
3. Write down your answer.
In addition to digital symbols, remember how we write the numbers using words:
1 - one 2 - two 3 - three 4 - four 5 - five
6 - six 7 - seven 8 - eight 9 - nine 10 - ten
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