Question

Mark the correct alternatives in each of the following:

By how much less than −3 is −7?

(a) 4 (b) −4 (c) 10 (d) −10

Answer 1

Difference between −3 and −7 = (−3) − (−7) = −3 + 7 = 4

Thus, −7 is less than −3 by 4.

Hence, the correct answer is option (a).