Cuma ngetest doang guys.
Hurtful..
14 years ago
Wednesday, March 24, 2010
Thursday, March 11, 2010
MATH TIPS
Berikut di bawah ini adalah tips-tips menghitung cepat. Semoga dapat membantu teman-teman semua dalam melakukan perhitungan tanpa menggunakan alat bantu terutama kalkulator. Semoga juga bisa berguna bagi putra/i atau keponakan teman-teman. Selamat mencoba!
MULTIPLY AS HIGH AS 20X20
Quickly multiply any two two-digit numbers up to 20 x 20
Example: 17
x 12
= 204
Step 1
Add the one’s place digit from the smaller number to the larger number
17 + 2 = 19
Step 2
Add a zero to the end --> 190
Step 3
Multiply the one’s place digit of the number 7 x 2 = 14
Step 4
Add the results of steps 2 & 3 for the answers --> 190 + 14 = 204
Quickly multiply any two two-digit numbers up to 20 x 20
Example: 17
x 12
= 204
Step 1
Add the one’s place digit from the smaller number to the larger number
17 + 2 = 19
Step 2
Add a zero to the end --> 190
Step 3
Multiply the one’s place digit of the number 7 x 2 = 14
Step 4
Add the results of steps 2 & 3 for the answers --> 190 + 14 = 204
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