Day: March 26, 2026

This week in maths, my group and I learned about prime and composite numbers. We practiced how to tell if a number is prime, which only has two factors, or composite, which has more than two. We looked at examples like 43, which is prime because it can only be divided by 1 and itself, and 60, which is composite because it can be divided by many numbers like 2, 3, 4, 5, 6, 10, 12, 15, 20, and 30. Doing this helped me understand how numbers are made and see patterns in their factors. I also feel more confident now in recognising whether numbers are prime or composite, which will help me in future maths problems.

Group 2 of LS2 have been learning and some revising on “Lowest Common Multiples” (LCM).

LCM consists of multiplication where you find the number in common between 2 numbers multiplication order. For an example you could use 4 and 7 up to 5 to find the LCM. You times both up to 5 and if there is the same number diagonal from eachother. (4, 8, 12, 16, 20.) and (7, 14, 21, 28, 35) in this case, there is no common multiple up to five. But if you know your four times tables if you add 2 on you can make it to 28, which the 7 times table has making it the answer.

Group 2 in LS2 have been revising on round numbers up to the billions.

Rounding is a useful skill to estimate. In this blog, we will be teaching you how to round. You need to know place values were you can find our example in our earlier blogs. To round you need a base number, I’ll pick a random one. (482.119) if rounding and you see a question asking to round to the nearest tenth you need to realise that the “th” means that it is in the decimal, not the whole number. in this number rounding to the nearest tenth would be the 1 after the 9 in the decimal place. due to the number being higher than 4, we round up. which is rounding to the nearest tenth. which would be 20 in this case. This would change the number to 482.120. I hope that this blog has taught you how to round.