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Question
primary 5 | Maths
| Rate & Ratio
2 Answers Below
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Pls help me with this question
Date Posted: 2 years ago
Views: 251
Ans: (4)
(49-1)÷2 = 24
(49+1)÷2 = 25
24×(49+1) + 25 = 1225 (Ans)
(49-1)÷2 = 24
(49+1)÷2 = 25
24×(49+1) + 25 = 1225 (Ans)
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done
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clear
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Try
Date Posted:
2 years ago
The answer of the question is correct but i don’t understand all the equations
Instead of working with 49 directly.
Try to set a small number, like, 7
1+7=8
2+6=8
3+5=8
1+2+3+4+5+6+7
=4+3×8
4←(7+1)÷2
3←(7-1)÷2
From here
U will have the idea the equation for number 49
Please feel free to ask if you still don't understand
Try to set a small number, like, 7
1+7=8
2+6=8
3+5=8
1+2+3+4+5+6+7
=4+3×8
4←(7+1)÷2
3←(7-1)÷2
From here
U will have the idea the equation for number 49
Please feel free to ask if you still don't understand
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
Read the 2 examples . Is to simplify the concept using smaller figures . Then read the solution to the qn by applying the concepts
Date Posted:
2 years ago
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