Practice30Create account

In a survey of the Chilika lagoon, point A is recorded at −7 m and point B at −11 m, both measured from the water surface. Which point is deeper, and which reading is the greater integer?

Class 7Integers (Extended)Integers
  • AA is deeper, and −7 is the greater number.
  • BB is deeper, and −11 is the greater number.
  • CB is deeper, but −7 is the greater number.
  • DA is deeper, and −11 is the greater number.

Step-by-Step Solution

Depth is distance below the surface, so B wins on depth: |−11| = 11 is more than |−7| = 7. But as integers, −7 > −11, because −7 lies to the right of −11 on the number line. For negative readings 'deeper' and 'greater' point in opposite directions, and that is exactly the trap here.
Answer: C) B is deeper, but −7 is the greater number.

Key idea: Dividing integers

The sign rule for division is **the same as for multiplication**: same signs → positive, different signs → negative.

12 ÷ 4 = 3
(−12) ÷ (−4) = 3
12 ÷ (−4) = −3
(−12) ÷ 4 = −3

Also: integer ÷ 1 = the integer; integer ÷ itself = 1; **never divide by 0** — division by zero is undefined.

Master this chapter in 30 minutes a day.

Don't just memorise the answer — build a daily practice habit.

Practice 5 Similar Questions Free →

All Integers (Extended) practice questions

More Class 7 Integers (Extended) practice

A cold-storage unit for Nashik grapes reads 4°C, and its compressor lowers the reading…Two kirana shops close the week with these entries, money paid out being negative. Shop…What is the sum of all the integers from −7 to 7, taking both ends and everything in…What is the predecessor of −1, and what is its successor?Two integers a and b satisfy a × b = 0, and a = −13. What must b be?