A note for the parent
What your child had to do in this Real Numbers problem
This was not a watch-and-copy exercise. The student had to make 3 small mathematical decisions and correct any wrong turns before moving forward.
The skill being built
Reasoning, not answer recognition
Translate a remainder condition into exact multiples, then use prime factors to find the greatest possible divisor.
The mistake we watch for
A wrong answer is useful evidence
Taking the HCF of the original numbers ignores the different remainders and solves the wrong problem.
What happens when a step goes wrong?
The choice is crossed out
The app does not pretend the mistake did not happen.
The reason is explained
The child sees the exact misconception behind that choice.
The child tries again
The app guides, but the student still makes the next decision.
If this teaching style helps
Let your child keep learning this way
Create a free account to save progress and explore the Linear Equations chapter with no expiry. Get the Board Prep Pass for the complete learning path across all 14 chapters.
₹999 one-time. All 14 chapters. Access until 31 March 2027. Linear Equations stays free.