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(5X)² |
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Trick Description
In this module, you will learn the techniques on how to efficiently square two digit numbers beginning with 5, for example, (54)2, (59)2 and (56)2, etc.
The module will provide you with an explanation on how the techniques were derived, their limitation, usage example as well as an application technique which the tricks can be used to help you solve problems faster!
- Prerequisites:
- High school level maths knowledge
- Duration:
- 15 mins (estimated time to complete excluding exercises)
- Subscription Prices:
- Recommendation:
- Learners of high school level and above who wants to improve their problem solving maths skills for exams and competitions
*All online transactions are handled in Australian dollars. Prices in other currencies are shown as a guide only. See more details. |
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Product of (X5) and (Y5) |
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Trick Description
Have you ever noticed that the product of two numbers both having "5" as the last digit of their numbers, always end up with "25" or "75" as the last two digits of the answers?
In this module, you will learn the techniques on how to efficiently calculate the product of (X5) and (Y5), for example, 65 x 75, 85 x 25, 355 x 575, (55)2, etc.
The module will provide you with an explanation on how the techniques were derived, their limitations, usage examples as well as some advance application techniques which the tricks can be used to help you solve problems faster!
- Prerequisites:
- High school level maths knowledge
- Duration:
- 40 mins (estimated time to complete excluding exercises)
- Subscription Prices:
- Recommendation:
- Learners of high school level and above who wants to improve their problem solving maths skills for exams and competitions
*All online transactions are handled in Australian dollars. Prices in other currencies are shown as a guide only. See more details. |
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Product of 1's |
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Trick Description
In this module, you will learn the techniques on how to efficiently calculate the product of integers consisting of only 1's , for example, 111 x 111,111, 11 x 111, (11,111)2, etc.
The module will provide you with an explanation on how the techniques were derived, their limitation, usage example as well as an application technique which the tricks can be used to help you solve problems faster!
- Prerequisites:
- High school level maths knowledge
- Duration:
- 30 mins (estimated time to complete excluding exercises)
- Subscription Prices:
- Recommendation:
- Learners of high school level and above who wants to improve their problem solving maths skills for exams and competitions
*All online transactions are handled in Australian dollars. Prices in other currencies are shown as a guide only. See more details. |
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Product of 9's |
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Trick Description
In this module, you will learn the techniques on how to efficiently calculate the product of numbers consisting of only 9's, for example 999 x 999,999, (99,999)2, (999)3, etc.
The module will provide you with an explanation on how the techniques were derived, their limitations, usage examples as well as some advance application techniques which the tricks can be used to help you solve problems faster!
- Prerequisites:
- High school level maths knowledge
- Duration:
- 30 mins (estimated time to complete excluding exercises)
- Subscription Prices:
- Recommendation:
- Learners of high school level and above who wants to improve their problem solving maths skills for exams and competitions
*All online transactions are handled in Australian dollars. Prices in other currencies are shown as a guide only. See more details. |
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Fixed Rational Numbers when Multiplied by "9" or "3" |
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Trick Description
Have you ever noticed that any fixed rational number when multiplied by "9" or "3", the sum of the digits of the multiplication result can be divided by "9" or "3" respectively?
In this module you will learn why this is so and how to make use of this principle to solve different problems.
- Prerequisites:
- High school level maths knowledge
- Duration:
- 20 mins (estimated time to complete excluding exercises)
- Subscription Prices:
- Recommendation:
- Learners of high school level and above who wants to improve their problem solving maths skills for exams and competitions
*All online transactions are handled in Australian dollars. Prices in other currencies are shown as a guide only. See more details. |
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Fixed Rational Numbers when Multiplied by "11" |
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Trick Description
Have you ever noticed that any fixed rational number when multiplied by "11", the difference between the sum of the digits in the odd places and those in the even places is divisible by "11" ?
In this module you will learn why this is so and how to make use of this principle to solve different problems.
- Prerequisites:
- High school level maths knowledge
- Duration:
- 15 mins (estimated time to complete excluding exercises)
- Subscription Prices:
- Recommendation:
- Learners of high school level and above who wants to improve their problem solving maths skills for exams and competitions
*All online transactions are handled in Australian dollars. Prices in other currencies are shown as a guide only. See more details. |
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