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Tag Archives: mental arithmetic
Subtraction by Adding On
This is also sometimes called “subtraction using a blank numberline” and I’ve even heard it called “that nonsensical modern method”. This latter is a real misnomer since it is neither nonsensical nor modern. In fact it’s a method that dates … Continue reading
Posted in Maths
Tagged addition, blank numberline, easy, homework help, maths, mental arithmetic, mental maths, method, subtraction
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How I passed the QTS maths test – part 1
Like a lot of people, I was always scared of maths. I hated it at school – somehow those numbers never made as much sense to me as they did to my peers. But because claiming to be bad at … Continue reading
Finding a square of a 2digit number in your head
Recently we looked at how to square twodigit numbers ending in 5 in your head. What about the other square numbers? Well, there’s a quick way to do that in your head as well. Let’s look at 372. First of … Continue reading
Posted in Maths
Tagged mental arithmetic, mental maths, multiplication, multiply, square numbers, tips, tricks
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How to square 2 digit numbers ending in 5 (in your head)
This is another trick that my family already knew, but I only learnt it recently so I’m sharing it for anybody out there who doesn’t already know. Squaring 2 digit numbers is easy if they end in 5. 5×5 = … Continue reading
Posted in Maths
Tagged mental arithmetic, mental maths, multiplication, multiply, square number, tip, trick
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Multiplying 2 digit numbers by 11
Earlier this year I discovered a trick for multiplying 2 digit numbers by 11. I taught this to some of the children I tutor to help them work out 11×11 and 11×12 which they had been struggling with but then … Continue reading
Posted in Maths
Tagged cheat, mental arithmetic, mental maths, multiplication, multiply, tips, tricks, x11
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D is also for… Division
Sometimes in maths it’s really useful to be able to look at a number and tell quickly what numbers it is possible to divide it by. There are a few tricks you can use to tell whether one number is … Continue reading
Posted in AZ of Learning, Maths
Tagged divisible by, division, mental arithmetic, mental maths, multiple of, tricks
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Teaching the Times Tables
I’ve been tutoring maths for a number of years now. I’ve tutored boys and girls. I’ve tutored individuals and small groups. I’ve tutored children of all ages from very different social backgrounds. But they have all had one thing in … Continue reading
Posted in Dyslexia / Dyscalculia, Maths
Tagged auditory, boys, confidence, division, dyslexia, education, games, girls, improve, improvement, improving, kinesthetic, learn, learning, maths, maths wrap, mental arithmetic, mental maths, motivate, motivating, motivation, multisensory learning, multisensory teaching, multiplication, pelmanism, progress, teach, Teaching, times tables, turn tables, tutor, visual
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