Year: 2024

HCF -Maths

What is HCF? HCF stands for ‘Highest common factor.’ A factor is a smaller number that you use to multiply other numbers. Don’t get it confused with Least common multiple, which means you have to list the multiples, eg 6, 12, 18, 24, 30.

For example, what is the HCF of 12 and 18?

12 {1, 2, 3, 4, 6, 12}

18 {1, 2, 3, 6, 9, 18}

A common factor means a factor that appears in both numbers. But we want the highest common factor, which is 6. Therefore, the HCF of 12 and 18 is 6.

Good fit book

A good fit book is something that is not too hard, not too easy, like a Goldilocks thing. It is something that you don’t lose interest in because it is too short, or a book that swirls with hundreds of words per page. This is an activity about choosing the right book.

Recent school phone ban

From the start of Term 2 phones have been banned in schools, colleges, in New Zealand because of the National Party policy. The cause is pretty self explanatory, people being on their phones rather than being face-to-face with people,  cheating with your phones, distractions. And what do I think about this? I will probably not have a phone until I turn 14 or so, but it could slightly help with people on their phones, and give them a break.

Adding decimals

This is an IXL activity but in the maths group I am in, we are learning about subtracting and adding decimals. For example, the problem above is 3.9+9.7. You can use the algorithm strategy for adding decimals. .9 and .7 are in the tenths value. Add them up, carry the 1 in .16 to the ones place. 1+3+9 is 13. So our answer is 13.6.