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primary 5 | Maths
| Area & Volume
3 Answers Below
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Date Posted: 2 years ago
Views: 500
Q(1)
【total unchanged-internal transfer】
LCM(2,7)→14
In the end
L:T:total = 3:4:7 = 6u:8u:14u
At first
L:T:total = 1:1:2 = 7u:7u:14u
7u = 28 ⇨ u = 4
change
7-6 = 8-7 = 1 unit → 4 （Answer）
Check
in the end
L → 24
T → 32
¾ × 32 = 24 ✓✓✓
【total unchanged-internal transfer】
LCM(2,7)→14
In the end
L:T:total = 3:4:7 = 6u:8u:14u
At first
L:T:total = 1:1:2 = 7u:7u:14u
7u = 28 ⇨ u = 4
change
7-6 = 8-7 = 1 unit → 4 （Answer）
Check
in the end
L → 24
T → 32
¾ × 32 = 24 ✓✓✓
Total both had = 28 × 2 = 56
Total both had = 3 units + 4 units = 7 units
Mrs Lim (3 units) = 56 ÷ 7 × 3 = 24
Total both had = 3 units + 4 units = 7 units
Mrs Lim (3 units) = 56 ÷ 7 × 3 = 24
Q(2)
【total unchanged-internal transfer】
left (B) → 17-8 = 9
LCM (2,9) → 18
In the end【left】
A:B:total = 3:2:5 = 27:18:45
At first
A:B:total = 11:34:45
Ans: ¹¹⁄₄₅
【total unchanged-internal transfer】
left (B) → 17-8 = 9
LCM (2,9) → 18
In the end【left】
A:B:total = 3:2:5 = 27:18:45
At first
A:B:total = 11:34:45
Ans: ¹¹⁄₄₅
See 3 Answers
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Correct me if I’m wrong.
Date Posted:
2 years ago
28-8 = 20
28+8 = 36
20/36 ≠ 3/4
28+8 = 36
20/36 ≠ 3/4
if A = 11
B → 34-11 = 12
⁸⁄₁₇ × 12 = ?
B → 34-11 = 12
⁸⁄₁₇ × 12 = ?
Thank you so much!
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