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\\October 8, 2025 12:09 PM Bharat Arora P-9 Reader _________________________ Date: ___________________74
5. Solve the following.
( a) 32,14,567 + 54,79,410 – 21,34,571
( b) 9,64,57,891 – 54,67,894 – 2,01,345
( c) 8,89,78,889 – 2,22,22,222 + 1,11,11,111
( d) 3,04,41,645 – 34,05,498 – 24,87,214
6. Solve the following word problems.
( a) Subtract the greatest 7-digit number from the smallest 9-digit number and write
the difference obtained in words.
( b) If the sum of two numbers is 7,79,56,974 and one of the numbers is 89,95,040,
find the other number.
( c) In the Municipal Corporation Election, candidate A got 72,85,378
votes and candidate B got 71,37,395 votes. Who got more votes and
by how much?
( d) The government purchased 8,50,725 bags of wheat. 4,08,368 bags were sold in
the market. How many bags were left in their stock?
( e) A contractor purchased 6,50,750 bricks for construction. 5,85,051 bricks were used
in a building. How many bricks remained with the contractor?
( f) Anil invested `9,55,890 in a business and Sunil invested `6,82,580 in another
business. Who invested more money and by how much?
Critical Thinking
Challenge Question
Palindrome Numbers
A palindrome number reads the same forward and backwards (e.g., 121, 5445).
Find all the 3-digit palindrome numbers between 101 and 200.
Find all the 4-digit palindrome numbers between 3000 and 4500.
Check if there are any 5-digit palindrome numbers between 10,000 and 11,000.
MultiPliCation of nuMbErS
Multiplication by 10, 100, 1000,...
When a number is multiplied by 10, we put a zero to the right side of the number.
examples: (a) 342 × 10 = 3420 (b) 5648 × 10 = 56,480
When a number is multiplied by 20, 30, 40, ..., 90, we multiply the number by 2, 3, 4, ...,
9 respectively and put a zero to the right side of the product so obtained.
examples: (a) 278 × 20 = 5560 (b) 3142 × 50 = 1,57,100
Mathematics-5 3737
Mathematics-5
