Question

Which of the following will have the same product as 3.97 x 4.6?

• A. 3.97 x 46
• B. 39.7 x 0.46
• C. 39.7 x 4.6
• D. 397 x 0.046

Answer 1

Answer: (B), (D)

The correct options are
B

39.7 x 0.46

D

397 x 0.046

We need to check the number of digits after the decimal point in all the options given.

3.97 x 4.6 has 3 digits after the decimal point, hence its product will be the same as 39.7 x 0.46 and 397 x 0.046 as they all have a total of 3 digits after the decimal point.

39.7 x 4.6 and 3.97 x 46 both have 2 digits after the decimal point , hence their product will be different from 3.97 x 4.6