Question

99 × 43 = ?

• A. 4357
• B. 4257
• C. 4256
• D. 4356

Answer 1

Answer:

B. 4257

• For competitive exams, speed is crucial. When one number is close to a power of 10 (like 99 is to 100), an alternative method is much faster.

• Represent 99 as (100 - 1).

• The problem becomes (100 - 1) × 43.

• Apply the distributive property of multiplication: (100 × 43) - (1 × 43).

• Calculate 100 × 43, which is simply 4300.

• Calculate 1 × 43, which is 43.

• Subtract the second result from the first: 4300 - 43 = 4257.