Advertisements
Advertisements
Question
By re-arranging the given numbers evaluate :
21 + 22 + 23 + 24 + 25 + 75 + 76 + 77 + 78 + 79
Fill in the Blanks
Sum
Advertisements
Solution
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
shaalaa.com
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
State True or False:
The sum of two odd numbers is an even number
State True or False:
The sum of an even number and an odd number is odd number.
State True or False:
Every whole number + 0 = The whole number itself.
Fill in the blank :
592 x 1 = _____
Fill in the blanks :
98 x 273 – 75 x 273 = ( _____ ) x 273 =_____ x 273
Evaluate using properties :
3023 x 723
- In each of the following patterns, construct next figure.
- In each case, if n denotes the number of figure and F denotes the number of matchsticks used, find F in terms of n.
- Also find, in each case, how many matches are required to make the: 16th figure and 30th figure.
LCM of 10, 15 and 20 is ______.
The smallest 6 digit natural number ending in 5 is ______.
Write the next three natural numbers after 10999.
