60% of 10 =
                   ( 6 )

40% of 50 =
                   (       )

50% of 10 =
                   (       )

90% of 60 =
                   (       )

40% of 90 =
                   (       )

50% of 70 =
                   (       )

60% of 20 =
                   (       )

20% of 70 =
                   (       )

60% of 10 =
                   (       )

          +[         ]

40% of 4 =
                   ( 1.6 )

90% of 9 =
                   (       )

7% of 90 =
                   (       )

4% of 20 =
                   (       )

70% of 1 =
                   (       )

40% of 3 =
                   (       )

1% of 40 =
                   (       )

6% of 50 =
                   (       )

3% of 70 =
                   (       )

          +[         ]

5% of 1 =
                   ( 0.05 )

8% of 5 =
                   (       )

4% of 2 =
                   (       )

1% of 3 =
                   (       )

4% of 1 =
                   (       )

6% of 5 =
                   (       )

3% of 2 =
                   (       )

9% of 4 =
                   (       )

2% of 2 =
                   (       )

          +[         ]

       ++[[            ]]