Maths Key skills:
This week we have been working on division, mostly using 2 digit numbers. Over the past few weeks, we have come to realise how important our times tables are. Your key skills task week will help you with both multiplication and division and many other areas of maths. You need to focus on learning your times tables and making your skills even more slick. Make sure you use ‘Tables master’ or ‘Hit the Button’ at least 5 times daily to improve your times tables scores. See if you can beat your score down to a time of between 30 to 40 seconds. For those of you who find this quite easy, try to learn your 15 times tables and make sure do the ‘Hit the Button’ mixed division questions aiming for 30 correct answers in 1 minute.
There is also a task about the multiples of three for you to tackle. Please make sure you try for 20 minutes or more to see what you can discover about multiples of three.
Multiples of Three
Look at these numbers:
9,7, 247, 102, 39, 45, 73
Some of the numbers divide exactly by 3 and others do not.
Arrange the numbers into two columns – those which divide exactly by 3 and those that do not divide by 3.
Choose some numbers of your own and decide which column they go into.
Next add up the digits of each number you have tested until you only have a single digit.
For example the sum of the digits of the number
365 is 3 + 6 + 5 = 14, and if you add the digits of the answer 1 + 4 = 5.
The sum of the digits 12345 is
1 + 2 + 3 + 4 + 5 = 15 and 15 is 1 + 5 = 6.
What do you notice?
Try some very hard numbers.
Does the rule still work?
Find out if the same thing happens for 5 or for 7.
Don’t forget, a key skills club will run on Tuesday lunchtimes after half term for those who prefer to complete this work at school.