Multiplying decimals
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Multiplying decimals
Can anyonew advise the best/simplist technique to teach a young child on multiplying decimals e.g. 0.62*0.53
Well I'm not 100% sure whether multiplying decimals is in the KS2 syllabus or not (anyone have a good link through to the definitive KS2 maths syllabus?) but I have seen it in commercially available KS2 revision guides.
But, Katel, if it is definitely not in the KS2 syllabus what is your advice for a parent of a child sitting a selective entry exam which definitely will require some kind of understanding of this?
But, Katel, if it is definitely not in the KS2 syllabus what is your advice for a parent of a child sitting a selective entry exam which definitely will require some kind of understanding of this?
Hi
0.62 x 0.53
First, ignore the decimal points.
Giving 62 x 53
Breakdown the sum into two parts
62 x 50 = 3100
62 x 3 = 186
Add the sum of both parts together
3286
Go back to the original sum and count how many numbers there are on the right of the decimal point, there are two numbers for each part of the sum, making four in total.
From the right hand side of 3286 count four places to the left and insert a decimal point giving .3286. I prefer 0.3286.
Regards
Mike
0.62 x 0.53
First, ignore the decimal points.
Giving 62 x 53
Breakdown the sum into two parts
62 x 50 = 3100
62 x 3 = 186
Add the sum of both parts together
3286
Go back to the original sum and count how many numbers there are on the right of the decimal point, there are two numbers for each part of the sum, making four in total.
From the right hand side of 3286 count four places to the left and insert a decimal point giving .3286. I prefer 0.3286.
Regards
Mike
Mike Edwards is a co-author of The Tutors product range.