3. 5 4/7 x 3 2/3
Convert mixed numbers to improper fractions
5 4/7 = 5x7+4 / 7 = 39/7
3 2/3 = 3x3+2 / 3 = 11/3
39/7 x 11/3
Multiply
39x11 / 7x3
Factor 39 = 3x13
3x13x11 / 7x3
Cancel the common factor 3
That will be, 13x11 / 7
13x11 / 7 = 143/7
Convert Improper fractions to mixed numbers
143/7 = 20 3/7
Answer = 20 3/7
4. 1/3 x 5 1/2
5 1/2 = 11/2
Multiply, 1/3 x 11/2
11/6
Convert to mixed numbers
11/6 = 1 5/6
Answer 1 5/6
5. 12 1/2 x 3 1/3
12 1/2 = 25/2 while 3 1/3 = 7/2 then multiply
25/2 x 7/2 = 175/4
Answer = 43 3/4
Correct me if I'm wrong.. but hope it helps :>
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Answers & Comments
3. 5 4/7 x 3 2/3
Convert mixed numbers to improper fractions
5 4/7 = 5x7+4 / 7 = 39/7
3 2/3 = 3x3+2 / 3 = 11/3
39/7 x 11/3
Multiply
39x11 / 7x3
Factor 39 = 3x13
3x13x11 / 7x3
Cancel the common factor 3
That will be, 13x11 / 7
13x11 / 7 = 143/7
Convert Improper fractions to mixed numbers
143/7 = 20 3/7
Answer = 20 3/7
4. 1/3 x 5 1/2
Convert mixed numbers to improper fractions
5 1/2 = 11/2
Multiply, 1/3 x 11/2
11/6
Convert to mixed numbers
11/6 = 1 5/6
Answer 1 5/6
5. 12 1/2 x 3 1/3
Convert mixed numbers to improper fractions
12 1/2 = 25/2 while 3 1/3 = 7/2 then multiply
25/2 x 7/2 = 175/4
Convert to mixed numbers
Answer = 43 3/4
Correct me if I'm wrong.. but hope it helps :>