In the last post on Mental Arithmetic I explored the mental arithmetic for adding numbers up to 2-digit number. I now extend this to the topic of "number bonds" - which are various ways in which we can divide up a number into its parts and combine … [Continue reading]

# Radio 702 Discussion on Mathematics

Hi all....I have been asked to talk about mathematics on radio 702 tomorrow (Wednesday 27 January 2016)...and I hope you are able to listen in. I will be addressing some of the points which I am developing on this web site, as well as within the … [Continue reading]

# Mental Arithmetic #3: Adding 2-digit numbers

In the last post we looked at adding single-digit numbers, such as 4+5 (which adds to 9, and is thus less than than 10), and 7+8 (which sums to 15, being larger than 10). I explained that these two types of single-digit addition are a core element of … [Continue reading]

# Mental Arithmetic #2 : Add single-digit numbers

In the last post I outlined the importance of having a well-developed proficiency in mental arithmetic to help you through school and in real-life work. Today I examine the first step of mental arithmetic knowledge, which is simply to know the sum … [Continue reading]

# Mental Arithmetic #1: Why?

In this age of the calculator, why should you have to learn to do arithmetic in your head? Surely the reason that we have the calculator is to help us do our calculations, and it is a tool for all of mankind, including school children, just like … [Continue reading]