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Natural numbers

Source: licencja: CC 0.

Liczby naturalne

Learning objectives

You will learn how to write and read natural multi‑digit numbers and mark natural numbers on a number line, as well as read natural numbers marked on a number line.

Learning effect

  • You save and read natural multi‑digit numbers and select and read natural numbers marked on the number line.

Collect information on natural numbersNatural numbersnatural numbers and their interpretation on the number linenumber linenumber line, make notes in your notebook.

Answer the questions:

  1. What numbers are called natural numbersNatural numbersnatural numbers? How many such numbers are there? Is there the largest or the smallest natural number?

  2. What is the difference between a digit and a number? How can you define a digit? How many Arabic numeralsArabic numeralsArabic numerals are there?

  3. Why is the system we use called the decimal numeral system?

  4. How to interpret natural numbersNatural numbersnatural numbers on the number linenumber linenumber line?

Compare your findings with the information below:

  1. In the decimal numeral system, digitsdigitsdigits are used to write numbers: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, called Arabic numeralsArabic numeralsArabic numerals.

  2. Natural numbersNatural numbersNatural numbers are: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, ..., 56, ..., 99, 100, ...

  3. Each natural number corresponds exactly to one point on the number linenumber linenumber line.

Task 1
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nagranie abstraktu

Write down with numbers and words all possible two‑digit numbers combinations that can be created from digitsdigitsdigits: 6, 5, 2.

Task 2
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nagranie abstraktu

Choose three any digitsdigitsdigits. Then create the largest and the smallest three‑digit number.

Task 3
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nagranie abstraktu

Write the numbers provided in words:

a) nine hundred and fifty‑two,
b) thirty‑five thousand eight hundred,
c) three thousand and seven,
d) sixty‑four thousand and twelve,
e) four hundred and eight.

Task 4
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nagranie abstraktu

Write in the notebook the numbers: 205, 698, 140, 47, 2356, 857, 86, 3030, 3568, 548. Next:

a) in green, mark the numbers in which the digit of thousands is less than 4,
b) in red, mark the numbers in which the digit of hundreds is greater than 5,
c) in blue, mark the numbers in which the digit of units is greater than the digit of tens.

Task 5
Zapisz słownie w języku angielskim liczby : 806524, 35321, 20202.
Zapisz słownie w języku angielskim liczby : 806524, 35321, 20202.
Task 6
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nagranie abstraktu

Open the applet. Mark the points with natural coordinates on the number linenumber linenumber line.

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Geogebra aplet - liczby naturalne na osi liczbowej. Galeria z opisami alternatywnymi poniżej.
Natural numbers on the number line
Source: GroMar, licencja: CC BY 3.0.
Task 7
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nagranie abstraktu

Draw a number linenumber linenumber line for each sub‑point and apply appropriate units on each one. Then mark the numbers.

a) 0, 4, 6, 8,
b) 5, 15, 20, 30,
c) 150, 200, 300, 350.

Task 8
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nagranie abstraktu

Task for volunteers:

Write three‑digit numbers, in which the digit of hundreds is twice smaller than the digit of units, and the digit of units is two times smaller than the digit of tens.

Do the revision exercises.

Remember
  • In the positional numeral system, digitsdigitsdigits called Arabic numeralsArabic numeralsArabic numerals, are used to write numbers: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.

  • Natural numbersNatural numbersNatural numbers are: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, ..., 56, ..., 99, 100, ...

  • Each natural number corresponds exactly to one point on the number linenumber linenumber line.

Exercises

Exercise 1
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Wersja alternatywna ćwiczenia: Determine which sentences are true. Możliwe odpowiedzi: 1. In the number 5486 the digit of tens is 8., 2. In the number 5486, the digit of tens is 4., 3. In the number 5486, the digit of units is 5., 4. In the number 5486, the digit of thousands is 5.
zadanie
Source: GroMar, licencja: CC BY 3.0.
Exercise 2

Write coordinates of points A, B, C and D, and mark them on the number line.

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Number line
Source: GroMar, licencja: CC BY 3.0.
Exercise 3

Write numbers in words in Polish nad English in your notebook:

  1. 584

  2. 1256

  3. 307

  4. 3030

Exercise 4
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Wersja alternatywna ćwiczenia: Indicate which pairs of expressions or words are translated correctly. Możliwe odpowiedzi: 1. liczby naturalne - natural numbers, 2. cyfry - digits, 3. cyfry arabskie - arabic numerals, 4. oś liczbowa - number line, 5. zwrot - unit, 6. punkt zerowy - direction
zadanie
Source: GroMar, licencja: CC BY 3.0.
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Interaktywna gra, polegająca na łączeniu wyrazów w pary w ciągu jednej minuty. Czas zaczyna upływać wraz z rozpoczęciem gry. Jeden ruch to odkrywanie najpierw jednej potem drugiej karty z wyrazem. Każdy wyraz jest odczytywany. Kolejny ruch to odkrywanie trzeciej i czwartej karty. W ten sposób odsłuchasz wszystkie wyrazy. Nawigacja z poziomu klawiatury za pomocą strzałek, odsłuchiwanie wyrazów enterem lub spacją. Znajdź wszystkie pary wyrazów.
Source: Zespół autorski Politechniki Łódzkiej, licencja: CC BY 3.0.

Glossary

arabic numerals
arabic numerals

cyfry arabskie

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wymowa w języku angielskim: arabic numerals
digits
digits

cyfry

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wymowa w języku angielskim: digits
direction
direction

kierunek

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wymowa w języku angielskim: direction
natural numbers
natural numbers

liczby naturalne

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wymowa w języku angielskim: natural numbers
number line
number line

oś liczbowa

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wymowa w języku angielskim: number line
unit
unit

jednostka miary

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wymowa w języku angielskim: unit
digits 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9
digits 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9

cyfry 0, 1, 2, 3, 4, 5, 6, 7, 8 i 9

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wymowa w języku angielskim: digits 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 --- used to create numbers
zero point
zero point

punkt zerowy

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wymowa w języku angielskim: zero point

Keywords

natural numbersNatural numbersnatural numbers

used to create numbersdigits 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9used to create numbers - znaki, za pomocą których zapisywane są liczby

number linenumber linenumber line