Page 66 - Math Genius C2

E:\Working\Orange_Education\Math_Genius_2\Open_Files\Chap_03
\ 26-Sep-2025 Bharat Arora Proof-10 Reader’s Sign _______________________ Date __________

4. Puja and Sony like to collect stamps. Puja has 56 t O

stamps and Sony has 48 stamps. Who has more

stamps and by how many? –
Answer: ________________________

t O
5. A box contains 45 DVDs. Out of them, 12 are

music DVDs. How many are non-music DVDs?
Answer: __________________ –

6. Vinod bought 75 balloons for his birthday celebration. t O

66 of them are used. How many balloons are left
unused? –

Answer: ________________________

Mental Maths Critical Thinking
Solve mentally and write the answers in the given blanks.

1. What will you get if you subtract the largest 1-digit number from the smallest 2-digit
number? ____________
2. What should be subtracted from 94 to get 0? ____________

3. Tina had 2 dozen bananas. She distributed 20 bananas. How many bananas are left
with her? [Hint: 1 dozen = 12 pieces] ____________

4. Subtract the smallest 2-digit odd number from the greatest 2-digit even number.
____________

5. What is the difference of the place value and face value of the digit 7 in the number
79? ____________

Challenge Question Critical Thinking

1. Write two different subtraction sentences, each having a result of 67.
2. + 3 = 10; + = 18; – = . = ?
3. Riya has a secret number. She adds 48, then subtracts 29, and ends up with 75. What

was Riya’s secret number?

64 Mathematics-2