Mathematical Operations
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Mathematical Operations
Mathematical Operations
My DS struggles, as much as I do, how to perform different operations in a given sequence. Can someone explain how to solve the followings with some explanations please?
(a) 5.3 + 4.7 x 10 =
(b) 4 – (5+7) -:- 3 =
(c) 14 + (24 – 4 -:- 2) =
(d) (12 + 6 X 2) – 14 -:-5 + 2 =
(e) 30 + 15 -:- 3 X 2 – 14 + (5-8) =
(-:- is the division)
Thanks in advance
Kevin
My DS struggles, as much as I do, how to perform different operations in a given sequence. Can someone explain how to solve the followings with some explanations please?
(a) 5.3 + 4.7 x 10 =
(b) 4 – (5+7) -:- 3 =
(c) 14 + (24 – 4 -:- 2) =
(d) (12 + 6 X 2) – 14 -:-5 + 2 =
(e) 30 + 15 -:- 3 X 2 – 14 + (5-8) =
(-:- is the division)
Thanks in advance
Kevin
Used BIDMAS: anything in Brackets (within which Bidmas also applies), followed by powers of (Indices), Division, Multiplication, Addition, Subtraction
(a) 5.3 + 4.7 x 10 = 5.3 + 47 = 52.3
(b) 4 – (5+7) -:- 3 = 4 - 12 /3 = 4 - 4 = 0
(c) 14 + (24 – 4 -:- 2) = 14+ (24 -2) = 14 + 22 = 36
(d) (12 + 6 X 2) – 14 -:-5 + 2 = (12 + 12)- 2.8 + 2=24-2.8+2 = 23.2
(e) 30 + 15 -:- 3 X 2 – 14 + (5-8) = 30 + 5 x 2 -14 + (-3)=30+10-14-3=23
I hope these are right.
(a) 5.3 + 4.7 x 10 = 5.3 + 47 = 52.3
(b) 4 – (5+7) -:- 3 = 4 - 12 /3 = 4 - 4 = 0
(c) 14 + (24 – 4 -:- 2) = 14+ (24 -2) = 14 + 22 = 36
(d) (12 + 6 X 2) – 14 -:-5 + 2 = (12 + 12)- 2.8 + 2=24-2.8+2 = 23.2
(e) 30 + 15 -:- 3 X 2 – 14 + (5-8) = 30 + 5 x 2 -14 + (-3)=30+10-14-3=23
I hope these are right.
BIDMAS/BODMAS - brackets first then indices the division/multiplication then addition/subtraction:
(a) 5.3 + 4.7 x 10 = 5.3 + 47 (ie do x first then add)
(b) 4 – (5+7) divide by 3 = 4 - 12 divide by 3 (do bracket first) = 4 - 4 (do division next) = 0
(c) 14 + (24 – 4 divide by 2) = 14+ (24 - 2) = 14 + 22
Does that help a bit?
http://www.cimt.plymouth.ac.uk/projects ... k8_4i3.htm
(a) 5.3 + 4.7 x 10 = 5.3 + 47 (ie do x first then add)
(b) 4 – (5+7) divide by 3 = 4 - 12 divide by 3 (do bracket first) = 4 - 4 (do division next) = 0
(c) 14 + (24 – 4 divide by 2) = 14+ (24 - 2) = 14 + 22
Does that help a bit?
http://www.cimt.plymouth.ac.uk/projects ... k8_4i3.htm
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