O set of natural numbers is formed by the numbers we use to count. The smallest natural number is zero; the greatest it is not possible to determine, as the set is infinite.
The set of natural numbers is represented by the letter and can be written as follows:
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See how the basic operations between natural numbers and their main properties are done.
Operations with natural numbers:
- Addition: a + b = c → a and b are the parts and c is the sum or total.
- Subtraction: a – b = c (a b) → a is the minuend, b is the subtrahend and c is the remainder or difference.
- Multiplication: a. b = c → a and b are the factors and c is the product.
- Division: a ÷ b = c (b 0) → a is the dividend, b is the divisor, and c is the quotient.
Properties of natural numbers:
- Commutative: addition → a + b = b + a; multiplication → a.b = b.a
- Associative: addition → (a + b) + c = a + (b + c); multiplication → (a.b).c = a.(b.c)
- Distributive: multiplication → (a + b).c = a.c + b.c; division → (a + b)÷c = a÷c + b÷c
To learn more about this subject, check out, below, a set of natural numbers exercise list. All exercises are solved, step by step!
List of exercises for the set of natural numbers
Question 1. Using the symbols < or >, rewrite each of the sentences below:
a) 2 is less than 8.
b) 13 is greater than 7.
c) 19 is less than 20.
Question 2. Which of the numbers below belong to the set of natural numbers?
a) 0
b) – 4
c) 1
d) 0.5
e) 1,000,000,000
f)
Question 3. Complete with the missing value and write your name in each of the operations:
a) 1432 + _____ = 2800
b) _____ – 1040 = 5390
c) 141. _____ = 846
d) 12000 ÷ _____ = 800
Question 4. Determine the unknown value in each of the operations:
a) 8 + ____ – 10 = 6
b) 3. (7 + ____) = 27
c) (26 – ____) ÷ 4 = 5
d) 30+3. ____ = 54
Question 5. Solve operations in two different ways:
a) 5. 9 + 5. 11 =
b) 8. 19 + 3. 19 =
c) (21 + 35) ÷ 7 =
Question 6. Write as a single power:
The)
B)
w)
d)
Question 7. Determine the result of .
Question 8. Calculate the result of .
Resolution of question 1
a) 2 < 8.
b) 13 > 7.
c) 19 < 20.
Resolution of question 2
ah yes.
b) No.
c) Yes.
d) No.
and yes.
f) No.
Resolution of question 3
a) 1432 + _____ = 2800
2800 – 1432 = 1368 ⇒ 1432 + 1368 = 2800
1368 is called a plot.
b) _____ – 1040 = 5390
5390 + 1040 = 6430 ⇒ 6430 – 1040 = 5390
6430 is called a minuend.
c) 141. _____ = 846
846 ÷ 141 = 6 ⇒ 141. 6 = 846
6 is called a factor.
d) 12000 ÷ _____ = 800
12000 ÷ 800 = 15 ⇒ 12000 ÷ 15 = 800
15 is called a divisor.
Resolution of question 4
a) 8 + ____ – 10 = 6
⇒ 8 + ____ = 6 + 10
⇒ 8 + ____ = 16
⇒ 8 + 8 = 16
b) 3. (7 + ____) = 27
⇒ 7 + ____ = 27 ÷ 3
⇒ 7 + ____ = 9
⇒ 7 + 2 = 9
c) (26 – ____) ÷ 4 = 5
⇒ 26 – ____ = 5. 4
⇒ 26 – ____ = 20
⇒ 26 – 6 = 20
d) 30+3. ____ = 54
⇒ 3. ____ = 54 – 30
⇒ 3. ____ = 24
⇒ 3. 8 = 24
Resolution of question 5
a) 5. 9 + 5. 11 =
1st form) 5. 9 + 5. 11 = 45 + 55 = 100
2nd form) 5. 9 + 5. 11 = 5.(9 + 11) = 5. 20 = 100
b) 8. 19 + 3. 19 =
1st form) 8. 19 + 3. 19 = 152 + 57 = 209
2nd form) 8. 19 + 3. 19 = (8 + 3). 19 = 11. 19 = 209
c) (21 + 35) ÷ 7 =
1st form) (21 + 35) ÷ 7 = 56 ÷ 7 = 8
2nd form) (21 + 35) ÷ 7 = (21 ÷ 7) + (35 ÷ 7) = 3 + 5 = 8
Resolution of question 6
The)
B)
w)
d)
Resolution of question 7
Resolution of question 8
You may also be interested:
- Prime numbers
- Cardinal numbers
- Decimal numbers
- negative numbers
- mixed numbers
- Complex numbers
- Numerical sets