What’s the Error? A student wrote an algebraic expression for “5 less than a number n divided by 3” as (n/3) - 5. What error did the student make?

Solution:

Given, a student wrote an algebraic expression for “5 less than a number n divided by 3” as (n/3) - 5.

We have to find the error made by the student.

5 less than a number n = n - 5

5 less than a number n divided by 3 = (n - 5)/3

Correct expression = (n - 5)/3

Expression written by student = (n/3) - 5

Therefore, the student divided the number ‘n’ by 3 instead of dividing (n-5) by 3.

✦ Try This: What’s the Error? A student wrote an algebraic expression for “6 less than a number n divided by 5” as (n/5) - 6. What error did the student make?

Given, a student wrote an algebraic expression for “6 less than a number n divided by 5” as (n/5) - 6.

We have to find the error made by the student.

6 less than a number n = n - 6

6 less than a number n divided by 5 = (n - 6)/5

Correct expression = (n - 6)/5

Expression written by student = (n/5) - 6

Therefore, the student made an error of quotient

☛ Also Check: NCERT Solutions for Class 7 Maths Chapter 12

NCERT Exemplar Class 7 Maths Chapter 10 Problem 95 (ii)

What’s the Error? A student wrote an algebraic expression for “5 less than a number n divided by 3” as (n/3) - 5. What error did the student make

Summary:

A student wrote an algebraic expression for “5 less than a number n divided by 3” as (n/3) - 5. The correct expression is (n - 5)/3. The student made an error of quotient.

☛ Related Questions:

• Write About it Shashi used addition to solve a word problem about the weekly cost of commuting by to . . . .
• Challenge Write an expression for the sum of 1 and twice a number n. If you let n be any odd number, . . . .
• Critical Thinking Will the value of 11x for x = -5 be greater than 11 or less than 11? Explain