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Anwesha
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- Maths
- Algebra
- Physics
- Trigonometry
- Arithmetic
I have been teaching for the past 6 years while still being a student. 96% in physics and 90% in Mathematics in ISC. Currently pursuing B.Techand doing a job
- Maths
- Algebra
- Physics
- Trigonometry
- Arithmetic
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About Anwesha
I am a Btech final year student. Despite having a job, I am still struggling financially as I have to pay the debts of my family. I love to teach. I have always wanted to be a teacher. Choosing me would mean not only a teacher but also a guide.
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About the lesson
- Primary
- Secondary
- SPM
- +8
levels :
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Secondary
SPM
Form 6
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- English
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English
1. To quickly multiply a number by 9, use this trick:
Write down the number you want to multiply by 9.
Subtract 1 from the number.
The first digit of the answer is one less than the original number, and the second digit is the difference between 9 and the first digit.
Example: 7 x 9
7 - 1 = 6
Answer: 63
2. Multiplication by 11:
For multiplying a two-digit number by 11:
Add the two digits together and place the result in the middle.
Keep the first and last digits of the original number the same.
Example: 36 x 11
3 + 6 = 9
Answer: 396
3. Square of a two-digit number ending in 5:
To square a two-digit number ending in 5:
Multiply the tens digit by itself + 1.
Append 25 to the result.
Example: 35^2
3 x (3 + 1) = 12
Answer: 1225
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