Question

Guess the answer of the multiplication 402 x 3 .

• A. Less than 900
• B. Less than 1050
• C. less than 1200
• D. More than 1200

Answer 1

The correct option is D More than 1200

To get the idea of multiplication we can simplify the number a bit
so to guess 402 x 3 we can use 400 in place of 402 since 400 x 3 is easier to calculate.
400 x 3 = (4 x 3) x 100
= 12 x 100
= 1200
Since 402 is more than 400 so 402 x 3 will also be more than 400 x 3
So 402 x 3 will be more than 1200
Option D matches well from the given options