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E:\Working\Focus_Learning\Math_Genius_4_(25-10-2023)\Open_Files\Chap-02
\\December 7, 2023 3:54 PM Bharat Arora P-6 Reader _________________________ Date: ___________________74

example 2: Solve: 43,268 – 11,426 + 21,635 – 35,760
Solution: Step 1: Add the numbers having Step 2: Add the numbers having

+ sign. – sign.
tth th H t O tth th H t O

1 1 1
4 3 2 6 8 1 1 4 2 6
+ 2 1 6 3 5 + 3 5 7 6 0
6 4 9 0 3 4 7 1 8 6

Step 3: Subtract the sum obtained in step 2 tth th H t O
from the sum obtained in step 1. 9

5 14 8 10 13
6 4 9 0 3
– 4 7 1 8 6
1 7 7 1 7

Thus, 43,268 – 11,426 + 21,635 – 35,760 = 17,717.

Practice time 2g

1. Solve the following:

(a) 32,617 + 11,358 – 23,471 (b) 45,243 + 13,648 – 17,647

(c) 72,436 – 43,645 + 72,310 (d) 2,19,000 – 1,45,001 – 32,451

(e) 2,71,409 – 4,67,521 – 1,10,216 + 3,89,899

2. An auditorium can accommodate 65,507 persons. If during a conference, 15,942

people have entered before noon and 14,940 after the noon, find out how many

more people can sit in the auditorium now?

3. On Sunday, 10,250 men, women and children visited the National museum. There

were 4275 men, 3549 women and the rest were children. Find the number of
children who visited the National museum.

Brain Sizzlers
Three housing societies collected donations for the earth quake victims.
The first society collected `56,987 while the second society collected `3,452 more
than the first society and the third society collected `6,981 less than the first society.
Calculate the total donation amount.

46 Mathematics-4