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Wow! Banyak soalan math yang boleh dijawab menggunakan 12 kaedah mudah ni, lagi-lagi yang part darab nombor

besar tu, no 2 dan 12. Kalaulah masa kat sekolah dulu kita belajar formula ni, mesti sekejap je jawab soalan exam.

Adik-adik yang masih sekolah boleh cuba, lepas tu korang pulak ajar cikgu Math! Ohsem 

1. Bagaimana Nak Convert Fahrenheit ke Celsius

via reddit/u/quaxon

2. Bagaimana Nak Darab Nombor Besar Dengan Pantas

via imgur / MoonnMan

3. Bagaiamana Nak Jawab Sifir Darab 11

Akhirnya saya boleh darab nombor besar dengan 11 dengan hanya mencongak!

via WonderHowTo

4. Rahsia Mudah Nak Ingat Nilai Pi (π)

Juga tips mudah nak ingat

via 1000lifehacks

5. Bagaimana Nak Jawab Soalan Pecahan (Fractions) Dengan Mudah

via imgur / ayounes

6. Bagaimana Nak Tahu Hari Dari Tarikh Yang Diberi

You might be confused looking at the picture below, but the math is actually quite simple (albeit a bit elaborate). You’ll

need the codes HERE, which will help you master this.

July simply has a code of 5.

20th is 6 because 7 goes into 20 twice, which is 14. 20 – 14 = 6.

2069 is 2 because the leap year code of 2068 is 1 and 2069 is 1 year after, so that’s 2.

The math can be difficult at first because there are a lot of codes, but it works out incredibly well once you pick it up.

Here’s a separate example:

January 3, 2014 is a Friday, right?

So, January, according to the table, is 6, and we handle days by using multiples of 7. We don’t need to, so it’s

actually just 3 in this case. Next we need to know the closest leap year, which was 2012. That has a year code of 1

and 2013 is 2 years after, so 3 again.

We get 6 + 3 + 3 = 12 – 7 = 5! FRIDAY!

via lifehacker

7. Penambahan Dan Penolakan Pecahan Cara Mudah

via imgur / ayounes

8. Sifir 9 Cara Mudah

Kira ke atas untuk puluh, dan ke bawah untuk sa

via Pinterest / Charles Stirton

9. Guna Tangan Untuk Darab 5, 6, dan 9

via instructables / misko13

10. Cara Mudah Kira Percentage

via Twitter / @LifeHacks

11. Cara Mudah Nak Ingat Simbol Lebih Besar dan Lebih Kecil

Buaya, akan makan yang lebih besar!

via ducksters

12. Guna Garisan Untuk Pendaraban

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