20% of 80 =
                   ( 16 )

90% of 30 =
                   (       )

10% of 80 =
                   (       )

10% of 40 =
                   (       )

50% of 60 =
                   (       )

60% of 50 =
                   (       )

70% of 90 =
                   (       )

70% of 50 =
                   (       )

20% of 80 =
                   (       )

          +[         ]

90% of 2 =
                   ( 1.8 )

90% of 8 =
                   (       )

8% of 70 =
                   (       )

5% of 90 =
                   (       )

30% of 8 =
                   (       )

50% of 1 =
                   (       )

6% of 10 =
                   (       )

6% of 30 =
                   (       )

4% of 50 =
                   (       )

          +[         ]

6% of 80 =
                   ( 4.8 )

30% of 7 =
                   (       )

9% of 10 =
                   (       )

50% of 8 =
                   (       )

7% of 40 =
                   (       )

4% of 90 =
                   (       )

2% of 70 =
                   (       )

9% of 40 =
                   (       )

20% of 9 =
                   (       )

          +[         ]

       ++[[            ]]