Can you pinpoint the answer to this question in 7 seconds without calculator? 34*78 + 53*22 = ? Find out how.
Can you pinpoint the answer to this question in 7 seconds without calculator?
34*78 + 53*22 = ?
- 2674
- 3818
- 4046
- 3671
For those of you that couldn't, let me show you how.
Step 1: Reduce each number to it last digit,
34*78 + 53*22 => 4*8 + 3*2
Step 2: Try to solve the smaller problem,
4*8 + 3*2 = 32 + 6
Step 3: Then reduce any number with 2 or more digits to its last digit as in step 1,
32 + 6 => 2 + 6 = 8
Step 4: Choose the option whose last digit is 8
Ans = B (3818)
When do you use this method?
- This method could save your time when taking objective exams where calculator is not allowed.
- This method works when you are performing only plus and times operation
Watch out for more tips!