NCERT Exemplar Solutions
Class 6 - Mathematics - Unit 7: Algebra - Multiple Choice Questions

Question 13

Step-by-step understanding:

1) The expression 10 – x means: start with 10, then subtract the number x.

2) Think of it like this:

Start: ( 10 )

Subtract: ( x )

Result: ( 10 - x )

3) Quick example:

If ( x = 3 ), then

( 10 - x = 10 - 3 = 7 )

Check each option:

• A: “10 is subtracted x times” → This means subtracting 10 again and again, which is not what ( 10 - x ) shows. ❌
• B: “x is subtracted 10 times” → That would look like subtracting ( x ) repeatedly many times, not just once. ❌
• C: “x is subtracted from 10” → This exactly matches ( 10 - x ).
• D: “10 is subtracted from x” → That would be ( x - 10 ), which is the reverse order. ❌

Conclusion: The correct meaning of ( 10 - x ) is “x is subtracted from 10”. So, the correct option is C.