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प्रश्न
By re-arranging the given numbers evaluate :
21 + 22 + 23 + 24 + 25 + 75 + 76 + 77 + 78 + 79
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उत्तर
21 + 22 + 23 + 24 + 25 + 75 + 76 + 77 + 78 + 79
= (21 + 79) + (22 + 78) + (23 + 77) + (24 + 76) + (25 + 75) (by associative law)
= 100 + 100+ 100+ 100 + 100 = 500
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संबंधित प्रश्न
Fill in the blank:
Smallest natural number is _________
Which property of addition is satisfied by :
3+ (5 + 4) = (3 + 5)+ 4
State True or False:
The sum of two even numbers is an odd number.
State True or False:
Every whole number + 0 = The whole number itself.
Evaluate using properties :
679 x 8 + 679 x 2
Find the difference between the smallest number of eight digits and the largest number of five digits.
Solve:
111 ÷ 3 = 37
222 ÷ 6 = 37
333 ÷ 9 = 37
If `3/4` of a box of apples weighs 3 kg and 225 gm, how much does a full box of apples weigh?
Which of the following statements is not true?
Every number is a multiple of itself.
