CurrentGK General Knowledge Mathematical Tricks Multiplying A 2-digit Number By 5 1/6
If you find this context important and usefull. We request to all visitors to sheare this with your friends on social networking channels.Multiplying A 2-digit Number By 5 1/6
Multiplying a 2-digit number by 5 1/6
- Select a 2-digit number.
- Multiply by 3.
- Add a zero.
- Add the original number.
- Divide the result by 6.
- The 2-digit number chosen to multiply by 5 1/6 is 24.
- Multiply by 3: 3 × 24 = 72
- Add a zero: 720
- Add the original number: 720 + 24 = 744
- Divide by 6: 744/6 = 124
- So 24 × 5 1/6 = 124.
See the pattern?
- The 2-digit number chosen to multiply by 5 1/6 is 41.
- Multiply by 3: 3 × 41 = 123
- Add a zero: 1230
- Add the original number: 1230 + 41 = 1271
- Divide by 6: 1271/6 = 211 5/6
- So 41 × 5 1/6 = 211 5/6.