Trick 1:Quick Square
Step1: If you need to square a 2 digit number ending in 5, you can do so very easily with this trick.
Step2: Mulitply the first digit by itself + 1, and put 25 on the end.
Step3:That is all!
Step4: Ex:25 ie(2*(2+1))&25
Answer:625
Trick 2: Multiply by 5
Step1: Take any number, then divide it by 2
Step2:If the result is whole, add a 0 at the end.
Step3: If it is not, ignore the remainder and add a 5 at the end.
Step4: 2682 x 5 = (2682 / 2) & 5 or 0
Step5: 2682 / 2 = 1341 (whole number so add 0)
Step6: Ans:13410
Step7: try another:5887 x 5,2943.5 (fractional numbers (ignore remainder, add 5)
Answer: 29435
Trick 3: Tough Multiplication
Step1: If you have a large number to multiply and one of the numbers is even, you can easily subdivide to get to the answer
Step2:Ex:32 x 125, is the same as: 16 x 250 is the same as: 8 x 500 is the same as: 4 x 1000 = 4,000
Trick 4: Subtracting from 1,000
Step1:To subtract a large number from 1,000 you can use this basic rule: subtract all but the last number from 9, then subtract the last number from 10:
Step2:Ex:1000-648
Step3: subtract 6 from 9 = 3
Step4: subtract 4 from 9 = 5
step5: subtract 8 from 10 = 2
Answer: 352
Wednesday, April 20, 2011
Math Magic / Phone Number / Missing Digit / Funny Tricks
Trick 1: Phone Number trick
Step1: Grab a calculator (You wont be able to do this one in your head) .
Step2: Key in the first three digits of your phone number (NOT the area code-if your number is 01-123-4567, the 1st 3 digits are 123).
Step3: Multiply by 80.
Step4: Add 1.
Step5: Multiply by 250.
Step6: Add the last 3 digits of your phone number with a 0 at the end as one number
step7: Repeat step 6
step8: Subtract 250
step9: Divide number by 20
Answer: The 3 digits of your phone number
Funny Trick That results on your exact phone number!!
Trick 2: Missing digit Trick
Step1: Choose a large number of six or seven digits.
Step2: Take the sum of digits.
Step3: Subtract sum of digits from any number chosen.
Step4: Mix up the digits of resulting number.
Step5: Add 25 to it.
Step6: Cross out any one digit except zero.
step7: Tell the sum of the digits. Subtract the sum of the digits from 25.
Answer: Inorder to find out the missing digit, subtract the sum of digits from 25. The difference is the missing digit.
Step1: Grab a calculator (You wont be able to do this one in your head) .
Step2: Key in the first three digits of your phone number (NOT the area code-if your number is 01-123-4567, the 1st 3 digits are 123).
Step3: Multiply by 80.
Step4: Add 1.
Step5: Multiply by 250.
Step6: Add the last 3 digits of your phone number with a 0 at the end as one number
step7: Repeat step 6
step8: Subtract 250
step9: Divide number by 20
Answer: The 3 digits of your phone number
Funny Trick That results on your exact phone number!!
Trick 2: Missing digit Trick
Step1: Choose a large number of six or seven digits.
Step2: Take the sum of digits.
Step3: Subtract sum of digits from any number chosen.
Step4: Mix up the digits of resulting number.
Step5: Add 25 to it.
Step6: Cross out any one digit except zero.
step7: Tell the sum of the digits. Subtract the sum of the digits from 25.
Answer: Inorder to find out the missing digit, subtract the sum of digits from 25. The difference is the missing digit.
Math Magic Tricks - Birthday Date Calcualtions
Trick 1: Birthday magic
Step1: Add 18 to your birth month.
Step2: Multiply by 25.
Step3: Subtract 333.
Step4: Multiply by 8.
step5: Subtract 554.
step6: Divide by 2.
step7: Add your birth date.
step8: Multiply by 5.
step9: Add 692.
step10: Multiply by 20.
step11: Add only the last two digits of your birth year.
step12: Subtract 32940 to get your birthday!.
Example: If the answer is 123199 means that you were born on December 31, 1999. If the answer is not right, you followed the directions incorrectly or lied about your birthday.
Step1: Add 18 to your birth month.
Step2: Multiply by 25.
Step3: Subtract 333.
Step4: Multiply by 8.
step5: Subtract 554.
step6: Divide by 2.
step7: Add your birth date.
step8: Multiply by 5.
step9: Add 692.
step10: Multiply by 20.
step11: Add only the last two digits of your birth year.
step12: Subtract 32940 to get your birthday!.
Example: If the answer is 123199 means that you were born on December 31, 1999. If the answer is not right, you followed the directions incorrectly or lied about your birthday.
Math Magic / Number fun / Maths Tricks
Trick 1: 2's trick
Step1: Think of a number .
Step2: Multiply it by 3.
Step3: Add 6 with the getting result.
Step4: divide it by 3.
Step5: Subtract it from the first number used.
Answer:2
Trick 2: Any Number
Step1: Think of any number.
Step2: Double the number.
Step3: Add 9 with result.
Step4: sub 3 with the result.
Step5: Divide the result by 2.
Step6: Subtract the number with the number with first number started with.
Answer: 3
Trick 3: Any three digit Number
Step1:Add 7 to it.
Step2:Multiply the number with 2.
Step3:subtract 4 with the result.
Step4: Divide the result by 2.
Step5:Subtract it from the number started with.
Answer: 5
Step1: Think of a number .
Step2: Multiply it by 3.
Step3: Add 6 with the getting result.
Step4: divide it by 3.
Step5: Subtract it from the first number used.
Answer:2
Trick 2: Any Number
Step1: Think of any number.
Step2: Double the number.
Step3: Add 9 with result.
Step4: sub 3 with the result.
Step5: Divide the result by 2.
Step6: Subtract the number with the number with first number started with.
Answer: 3
Trick 3: Any three digit Number
Step1:Add 7 to it.
Step2:Multiply the number with 2.
Step3:subtract 4 with the result.
Step4: Divide the result by 2.
Step5:Subtract it from the number started with.
Answer: 5
Age Calculation
Age Calculation Tricks:
Step1: Multiply the first number of the age by 5. (If <10, ex 5, consider it as 05. If it is >100, ex: 102, then take 10 as the first digit, 2 as the second one.)
Step2: Add 3 to the result.
Step3: Double the answer.
Step4: Add the second digit of the number with the result.
Step5: Subtract 6 from it.
Answer: That is your age.
Step1: Multiply the first number of the age by 5. (If <10, ex 5, consider it as 05. If it is >100, ex: 102, then take 10 as the first digit, 2 as the second one.)
Step2: Add 3 to the result.
Step3: Double the answer.
Step4: Add the second digit of the number with the result.
Step5: Subtract 6 from it.
Answer: That is your age.
Names for Powers of 10
| Values | Zero's | Names |
| 100 | 0 | One |
| 101 | 1 | Ten |
| 102 | 2 | Hundred |
| 103 | 3 | Thousand |
| 104 | 4 | Myriad |
| 106 | 6 | Million |
| 109 | 9 | Billion |
| 1012 | 12 | Trillion |
| 1015 | 15 | Quadrillion |
| 1018 | 18 | Quintillion |
| 1021 | 21 | Sextillion |
| 1024 | 24 | Septillion |
| 1027 | 27 | Octillion |
| 1030 | 30 | Nonillion |
| 1033 | 33 | Decillion |
| 1036 | 36 | Undecillion |
| 1039 | 39 | Duodecillion |
| 1042 | 42 | Tredecillion |
| 1045 | 45 | Quattuordecillion |
| 1048 | 48 | Quindecillion |
| 1051 | 51 | Sexdecillion |
| 1054 | 54 | Septdecillion / Septendecillion |
| 1057 | 57 | Octodecillion |
| 1060 | 60 | Nondecillion / Novemdecillion |
| 1063 | 63 | Vigintillion |
| 1066 | 66 | Unvigintillion |
| 1069 | 69 | Duovigintillion |
| 1072 | 72 | Trevigintillion |
| 1075 | 75 | Quattuorvigintillion |
| 1078 | 78 | Quinvigintillion |
| 1081 | 81 | Sexvigintillion |
| 1084 | 84 | Septenvigintillion |
| 1087 | 87 | Octovigintillion |
| 1090 | 90 | Novemvigintillionn |
| 1093 | 93 | Trigintillion |
| 1096 | 96 | Untrigintillion |
| 1099 | 99 | Duotrigintillion |
| 10100 | 100 | Googol |
| 10102 | 102 | Trestrigintillion |
| 10120 | 120 | Novemtrigintillion |
| 10123 | 123 | Quadragintillion |
| 10138 | 138 | Quinto-Quadragintillion |
| 10153 | 153 | Quinquagintillion |
| 10180 | 180 | Novemquinquagintillion |
| 10183 | 183 | Sexagintillion |
| 10213 | 213 | Septuagintillion |
| 10240 | 240 | Novemseptuagintillion |
| 10243 | 243 | Octogintillion |
| 10261 | 261 | Sexoctogintillion |
| 10273 | 273 | Nonagintillion |
| 10300 | 300 | Novemnonagintillion |
| 10303 | 303 | Centillion |
| 10309 | 309 | Duocentillion |
| 10312 | 312 | Trescentillion |
| 10351 | 351 | Centumsedecillion |
| 10366 | 366 | Primo-Vigesimo-Centillion |
| 10402 | 402 | Trestrigintacentillion |
| 10603 | 603 | Ducentillion |
| 10624 | 624 | Septenducentillion |
| 10903 | 903 | Trecentillion |
| 102421 | 2421 | Sexoctingentillion |
| 103003 | 3003 | Millillion |
| 103000003 | 3000003 | Milli-Millillion |
Amazing Prime Numbers
| Here are few amazing prime numbers, these prime numbers were proved by the XVIIIth century. |
| 31 |
| 331 |
| 3331 |
| 33331 |
| 333331 |
| 3333331 |
| 33333331 |
| The next number 333333331 is not a prime number. Whereas it is multiplied by 17 x 19607843 = 333333331. |
Number 2519
| 2519 Mod n means the reminder of 2519/n, here / is the integer division. |
| 2519 Mod n |
| 2519 Mod 2 = 1 |
| 2519 Mod 3 = 2 |
| 2519 Mod 4 = 3 |
| 2519 Mod 5 = 4 |
| 2519 Mod 6 = 5 |
| 2519 Mod 7 = 6 |
| 2519 Mod 8 = 7 |
| 2519 Mod 9 = 8 |
| 2519 Mod 10 = 9 |
| Sequential Numbers with 2519 |
| 1259 x 2 + 1 = 2519 |
| 839 x 3 + 2 = 2519 |
| 629 x 4 + 3 = 2519 |
| 503 x 5 + 4 = 2519 |
| 419 x 6 + 5 = 2519 |
| 359 x 7 + 6 = 2519 |
| 314 x 8 + 7 = 2519 |
| 279 x 9 + 8 = 2519 |
| 251 x 10 + 9 = 2519 |
Beauty of Mathematics
| Sequential Inputs of numbers with 8 |
| 1 x 8 + 1 = 9 |
| 12 x 8 + 2 = 98 |
| 123 x 8 + 3 = 987 |
| 1234 x 8 + 4 = 9876 |
| 12345 x 8 + 5 = 98765 |
| 123456 x 8 + 6 = 987654 |
| 1234567 x 8 + 7 = 9876543 |
| 12345678 x 8 + 8 = 98765432 |
| 123456789 x 8 + 9 = 987654321 |
| Sequential 1's with 9 |
| 1 x 9 + 2 = 11 |
| 12 x 9 + 3 = 111 |
| 123 x 9 + 4 = 1111 |
| 1234 x 9 + 5 = 11111 |
| 12345 x 9 + 6 = 111111 |
| 123456 x 9 + 7 = 1111111 |
| 1234567 x 9 + 8 = 11111111 |
| 12345678 x 9 + 9 = 111111111 |
| 123456789 x 9 + 10 = 1111111111 |
| Sequential 8's with 9 |
| 9 x 9 + 7 = 88 |
| 98 x 9 + 6 = 888 |
| 987 x 9 + 5 = 8888 |
| 9876 x 9 + 4 = 88888 |
| 98765 x 9 + 3 = 888888 |
| 987654 x 9 + 2 = 8888888 |
| 9876543 x 9 + 1 = 88888888 |
| 98765432 x 9 + 0 = 888888888 |
| Numeric Palindrome with 1's |
| 1 x 1 = 1 |
| 11 x 11 = 121 |
| 111 x 111 = 12321 |
| 1111 x 1111 = 1234321 |
| 11111 x 11111 = 123454321 |
| 111111 x 111111 = 12345654321 |
| 1111111 x 1111111 = 1234567654321 |
| 11111111 x 11111111 = 123456787654321 |
| 111111111 x 111111111 = 12345678987654321 |
| Without 8 |
| 12345679 x 9 = 111111111 |
| 12345679 x 18 = 222222222 |
| 12345679 x 27 = 333333333 |
| 12345679 x 36 = 444444444 |
| 12345679 x 45 = 555555555 |
| 12345679 x 54 = 666666666 |
| 12345679 x 63 = 777777777 |
| 12345679 x 72 = 888888888 |
| 12345679 x 81 = 999999999 |
| Sequential Inputs of 9 |
| 9 x 9 = 81 |
| 99 x 99 = 9801 |
| 999 x 999 = 998001 |
| 9999 x 9999 = 99980001 |
| 99999 x 99999 = 9999800001 |
| 999999 x 999999 = 999998000001 |
| 9999999 x 9999999 = 99999980000001 |
| 99999999 x 99999999 = 9999999800000001 |
| 999999999 x 999999999 = 999999998000000001 |
| ...................................... |
| Sequential Inputs of 6 |
| 6 x 7 = 42 |
| 66 x 67 = 4422 |
| 666 x 667 = 444222 |
| 6666 x 6667 = 44442222 |
| 66666 x 66667 = 4444422222 |
| 666666 x 666667 = 444444222222 |
| 6666666 x 6666667 = 44444442222222 |
| 66666666 x 66666667 = 4444444422222222 |
| 666666666 x 666666667 = 444444444222222222 |
| ...................................... |
Day of the Date
Day of the Week:
January has 31 days. It means that every date in February will be 3 days later than the same date in January(28 is 4 weeks exactly). The below table is calculated in such a way. Remember this table which will help you to calculate.
Step1: Ask for the Date. Ex: 23rd June 1986
Step2: Number of the month on the list, June is 4.
Step3: Take the date of the month, that is 23
Step4: Take the last 2 digits of the year, that is 86.
Step5: Find out the number of leap years. Divide the last 2 digits of the year by 4, 86 divide by 4 is 21.
Step6: Now add all the 4 numbers: 4 + 23 + 86 + 21 = 134.
Step7: Divide 134 by 7 = 19 remainder 1.
The reminder tells you the day.
Answer: Monday
January has 31 days. It means that every date in February will be 3 days later than the same date in January(28 is 4 weeks exactly). The below table is calculated in such a way. Remember this table which will help you to calculate.
| January | 0 |
| February | 3 |
| March | 3 |
| April | 6 |
| May | 1 |
| June | 4 |
| July | 6 |
| August | 2 |
| September | 5 |
| October | 0 |
| November | 3 |
| December | 5 |
Step1: Ask for the Date. Ex: 23rd June 1986
Step2: Number of the month on the list, June is 4.
Step3: Take the date of the month, that is 23
Step4: Take the last 2 digits of the year, that is 86.
Step5: Find out the number of leap years. Divide the last 2 digits of the year by 4, 86 divide by 4 is 21.
Step6: Now add all the 4 numbers: 4 + 23 + 86 + 21 = 134.
Step7: Divide 134 by 7 = 19 remainder 1.
The reminder tells you the day.
| Sunday | 0 |
| Monday | 1 |
| Tuesday | 2 |
| Wednesday | 3 |
| Thursday | 4 |
| Friday | 5 |
| Saturday | 6 |
Sunday, April 17, 2011
Monday, April 4, 2011
ការវិលត្រឡប់មកវិញរបស់ខ្ញុំ
បន្ទាប់ពីការរវល់នឹងការប្រឡងជាហូរហែគ្មានពេលសម្រាកកន្លងមកនេះ ខ្ញុំពិតជាមានអារម្មណ៍នឿយហត់យ៉ាងខ្លាំង ដោយទទួលបានទាំងលទ្ធផលល្អ មិនសូវល្អ និងមិនល្អ ។
ហើយចាប់ពីពេលនេះតទៅ ខ្ញុំសង្ឃឹមថាខ្ញុំនឹងមានពេលវេលាច្រើនជាងកាលពីមុន សម្រាប់រៀបចំប្លុករបស់ខ្ញុំឲ្យកាន់តែមានលក្ខណៈល្អប្រសើរឡើង ។
សូមអរគុណ!
ហើយចាប់ពីពេលនេះតទៅ ខ្ញុំសង្ឃឹមថាខ្ញុំនឹងមានពេលវេលាច្រើនជាងកាលពីមុន សម្រាប់រៀបចំប្លុករបស់ខ្ញុំឲ្យកាន់តែមានលក្ខណៈល្អប្រសើរឡើង ។
សូមអរគុណ!
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