maths hw help

2010-10-30 12:40 am

Question6.(4 marks)
a.Find the LCM of 39,26,22.
b.Find the HCF of 270,405.

更新1:

Please answer in english. 2010-10-29 16:19:17 補充 Please write the step and round your answer in 2d.p.(如果個answer的小數點後的數字是一樣) 如果如果個answer的小數點後的數字是不一樣,直接寫出來 2010-10-29 16:31:26 補充請列出算式和答案

更新2:

Please answer in english

回答 (3)

用戶46949

2010-10-31 12:58 am

✔ 最佳答案

a.Find the LCM of 39,26,22.
39=3x13
26=2x13
22=2x11

LCM = 2 x 3x 11 x 13 =858

b.Find the HCF of 270,405.
270=2 x 3 x3x 3x 5
405= 3 x 3 x 3 x3 x 5

HCF = 3 x 3 x 3 x 5 =135

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[匿名]

2010-10-30 1:21 am

a.Find the LCM of 39,26,22.
39=3x13
26=2x13
22=2x11
The LCM of 39,26,22=3x2x13x11=858

b.Find the HCF of 270,405.
270=3x3x3x3x10
405=3x3x3x3x5
the HCF of 270,405=3

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魔龍帝齊格益力多

2010-10-30 1:01 am

Find the LCM of 39,26,22

2.......... 39,26,22
2............39,13,11
13...........3,1,11
_____________
1716

2010-10-29 17:03:27 補充：
270,405

5..........270,405
9...........54,81
3............6,9
..............2,3
_______________
135

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