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Grade: 11

                        

here a trick to multiply the number of 8 to any numbers such as 8 × 5 For 8, use your left hand and raise 3 fingers. This means there are 2 closed fingers For 5, use your left hand and raise no finger. This means that there are 5 closed fingers Sum of raised fingers = 3 + 0 = 3. This means we have 3 tens or 30 Product of closed fingers = 2 × 5 = 10. This means that we have 10 ones or 1 ten or 10 30 + 10 = 40

6 years ago

Answers : (1)

Vijay Mukati
askIITians Faculty
2590 Points
							Good Method, You can learn many more shortcuts from us.

Thanks.
4 years ago
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