Mental Math: Adding Numbers Near Multiples of 10

People who are very good at mental math calculations are not all gifted. Some of them just know simple strategies in order to calculate numbers easily and fast. In this post, I am going to teach you a math trick on adding numbers that will simplify and speed up calculations. With enough practice, you can even use […]

Percentage Math Tricks: Making Use of 10%

In the previous post, we have learned how to calculate the percentage of a number by ignoring the percent sign. We continue our discussion on the tricks in getting the percentage with a number by making use of 10%. Calculating 10% of the number is one of the easiest calculations in percentage. To calculate 10% means […]

Percentage Math Trick 1: Ignoring the Percent Sign

Discounts and interests are some of the practical application of percentage. We often see 15% discount in the things we buy in stores and we also hear interests of money on loans. But how can we calculate percentage easily? Here are some math tricks on calculating percentage. Percentage Math Trick 1: Ignoring the Percent Sign The […]

Mental Multiplication: 2 Digit Numbers by 1 Digit Numbers

Mental multiplication is hard, but there are strategies and tricks that you can use to do this.  In a previous post, we have learned an alternative way on how to multiply 2-digit number by 2-digit number faster, and in this post, I am going to share another way, on how to do mental multiplication of of 2-digit numbers […]

Mental Math Shortcut on Multiplying by 5

Mental math shortcut is one of the topics that we will be discussing in this blog. After discussing multiplication by 11 and squaring numbers ending in 5, let us discuss about the shortcut of multiplying by 5. The Mental Math Calculation Example 1: How do you multiply 28 × 5? Instead of multiplying 28 by 5, (1) Multiply 28 by […]