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Primary 4 | Maths
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Date Posted: 4 years ago
Views: 202
80 = 2x2x2x2x5
140 = 2x2x5x7
180 = 2x2x3x3x5
common factors = 2x2x5
greatest possible length
= 2x2x5 = 20cm
*extra:
this means (for greatest length)
(i) four 20-cm from 80 cm
(ii) seven 20-cm from 140 cm
(iii) nine 20-cm from 180 cm
(b)
total smaller pieces = 4+7+9 = 20
(*assume each smaller piece is the greatest possible length)
.
.
.
140 = 2x2x5x7
180 = 2x2x3x3x5
common factors = 2x2x5
greatest possible length
= 2x2x5 = 20cm
*extra:
this means (for greatest length)
(i) four 20-cm from 80 cm
(ii) seven 20-cm from 140 cm
(iii) nine 20-cm from 180 cm
(b)
total smaller pieces = 4+7+9 = 20
(*assume each smaller piece is the greatest possible length)
.
.
.
See 1 Answer
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Break 80, 140 and 180 into their factors. Then find the largest common factor.
Date Posted:
4 years ago
Thank you
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