Advertisements
Advertisements
प्रश्न
For any whole numbers a, b, c, is it true that (a + b) + c = a + (c + b)? Give reasons.
उत्तर
For any whole numbers a, b and c, we have:
(a + b) + c = a + ( b + c)
Let a = 2, b = 3 and c = 4 [we can take any values for a, b and c]
LHS = (a + b) + c
= (2 + 3) + 4
= 5 + 4
= 9
RHS = a +(c + b)
= a + (b + c) [∵ Whole numbers follow the commutative law]
= 2 + (3 + 4)
= 2 + 7
= 9
∴ This shows that associativity (in addition) is one of the properties of whole numbers.
APPEARS IN
संबंधित प्रश्न
State true or false:
If a and b are any two whole numbers, then a + b = b + a
Fill in the blank:
987 + 1 = ______
Write (T) for true and (F) for false against the following statement:
500 is the predecessor of 499.
Fill in the blanks to make the following a true statement:
8063 + 0 = ......
Add the following numbers and check by reversing the order of the addends:
2359 + 548
Find the sum: (1546 + 498) + 3589.
Also, find the sum: 1546 + (498 + 3589).
Are the two sums equal?
State the property satisfied.
Find the difference: 463 − 9
Find the difference: 8640 − 999
Find the whole number n when: n − 18 = 39
Determine the following products by suitable rearrangements:
4 × 927 × 25
Find the product:
458 × 67
A car moves at a uniform speed of 75 km per hour. How much distance will it cover in 98 hours?
Find the value of: (1573 ÷ 1573) − (1573 ÷ 1573)
1 dozen bananas cost Rs 29. How many dozens can be purchased for Rs 1392?
What least number should be added to 10056 to get a number exactly divisible by 23?
In a division sum, we have dividend = 199, quotient = 16 and remainder = 7. The divisor is
24679 × 92 + 24679 × 8 = ?
If a whole number is divided by another whole number, which is greater than the first one, the quotient is not equal to zero.
Every multiple of a number is greater than or equal to the number.
All whole numbers are natural numbers.
