1. 6÷ 3/8 â 3/8 ÷6
=1/6x(3/8-3/8)
=1/6x0
=0
2. 4/7 Ã 5/9 + 3/7 Ã 5/9
=(4/7+3/7)x5/9
=1x5/9
=5/9
3. 5/2 -ï¼ 3/2 + 4/5 ï¼
=5/2-3/2-4/5
=1-4/5
=1/5
4. 6 Ãï¼ 1/2 + 2/3 ï¼
=6x1/2+6x2/3
=3+4
=7
5. 8 Ã 4/5 + 8 Ã 11/5
=8x(4/5+11/5)
=8x3
=24
6. 31 Ã 5/6 â 5/6
=(31-1)x5/6
=30x5/6
=25
7. 4/5 Ã 25/16 + 2/3 Ã 3/4
=5/4+1/2
=5/4+2/4
=7/4
8. 101 Ã 1/5 â 1/5 Ã 21
=(101-21)x1/5
=80x1/5
=16
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