Question

Which of the following is the best approximation for the product of 42.081 × 99.91? A) 42 B) 420 C) 4200 D) 42000

Answer 1

42.081 x 99.91

So you have to estimate

42 x 100 = 4200

So the answer will be C

Answer 2

42.081 * 99.91 ≈ 42 * 100 ≈ 4200

C) 4200