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Sagot :
All the properties of whole numbers are closed under addition and multiplication.
Whole numbers are a set of natural numbers including zero, but the set does not include fractions, decimals, and negative integers. The set of whole numbers is represented by ‘W’={0, 1, 2, 3, 4, 5, …...}
To check if the whole numbers are closed under subtraction or not we will check out the four properties namely, the closure property, the commutative property, the associative property, and the distributive property.
Let us consider each property one by one -
1. The closure property-
let's take two whole numbers say 5 and 3.
now, 5+3=8
and 5 × 3 =15
Thus, whole numbers are closed under addition and multiplication by closure property.
2. The commutative property-
let's take two whole numbers say 5 and 3.
now, 5+3=8 and 3+5=8,
hence, we get 3+5 = 5+3.
Also, 5 × 3 =15 and 3 × 5 =15
hence, we get 5 × 3 = 3 × 5
Thus, whole numbers are closed under addition and multiplication by commutative property.
3. The associative property-
let's take three whole numbers say 5, 3, and 1.
now (5+3)+1 = 9 and 5+(3+1)= 9
hence, we get (5+3)+1 = 5+(3+1).
Also, (5×3)×1 = 15 and 5×(3×1)= 15
hence, we get (5×3)×1 = 5×(3×1).
Thus, whole numbers are closed under addition and multiplication by associative property.
4. The distributive property-
let's take three whole numbers say 1, 6, and 5.
now, 1 × ( 6 + 5 ) = 1 + 6 – 1 × 5 = 1
and 1 × ( 6 – 5 ) = 1 × 1 = 1
Hence, 1=1.
Also, 1 × (6×5)= (1 × 6) × (1 ×5) = 6 × 5 =30
and 1 × (6×5) = 1 × 30 =30
hence, we get 30=30.
Thus, whole numbers are closed under addition and multiplication by distributive property.
Hence, we can conclude that all the properties of whole numbers are closed under addition and multiplication.
Read more about the whole numbers:
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The complete question is-
What properties are whole numbers closed under addition and multiplication?
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