a) 2/3 + 1/2 = 4/6 + 3/6 = 7/6 = 1 1/6
b) 1 3/5 - 5/6 = 8/5 - 5/6 = 48/30 - 25/30 = 23/30
c) 1/2 + 1/3 + 5/6 = 3/6 + 2/6 + 5/6 = 10/6 = 1 4/6 = 1 2/3
d) 7 - 2 3/4 = 6 4/4 - 2 3/4 = 4 1/4
e) 2 3/4 - 1 1/6 + 1 1/2 = 2 9/12 - 1 2/12 + 1 6/12 = 1 7/12 + 1 6/12 = 2 13/12 = 3 1/12
f) 4/9 * 3/8 = 12/72 = 1/6
g)1 1/2 * 8/9 = 3/2 * 8/9 = 24/18 = 1 6/18 = 1 1/3
h) 2 1/3 * 1 1/2 = 7/3 * 3/2 = 21/6 = 3 3/6 = 3 1/2
i) 5 * 1 1/10 = 5 5/10 = 5 1/2
j) 2 3/4 * 2 = 4 6/4 = 5 2/4 = 5 1/2
k) 4/5 : 2/10 = 4/5 * 10/2 = 2/1 * 2/1 = 2 * 2 = 4
l) 1 3/4 : 1 1/8 = 7/4 : 9/8 = 7/4 * 8:9 = 7/1 * 2/9 = 7 * 2/9 = 14/9 = 1 5/9
?) 2 6/9 : 1 2/3 = 24/9 : 5/3 = 24/9 * 3/5 = 24/3 * 1/5 = 24/15 = 1 9/15
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