(2)
Change the fraction 3/4 to have a denominator of 12.
(a) Multiply the denominator by 3 to make it 12:
3
= __
4 x 3 12
(b) To avoid changing the value, multiply the numerator by 3:
3 x 3 = _9
4 x 3 12
(3)
Change the fraction 2/3 to have a denominator of 12:
(a) Multiply the denominator by 4 to make it 12:
2
= __
3 x 4 12
(b) To avoid changing the value, multiply the numerator by 4:
2 x 4 = _8
3 x 4
12
(4)
Therefore, the fractions 3/4 and 2/3, when changed to have the least
common denominator, will be 9/12 and 8/12 respectively.
f.
For practice, change the following to have common denominators:
(1)
2/3, 5/15, 2/5
_______, _______, ________
(2)
1/12, 5/6
_______, _______
(3)
7/8, 3/6
_______, _______
(4)
3/4, 7/8, 5/16
_______, _______, ________
Answers: (1) 10/15, 5/15, 6/15
(2) 1/12, 10/12
(3) 21/24, 12/24
(4) 12/16, 14/16, 5/16
MD0802
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