40% of 30 =
                   ( 12 )

4% of 60 =
                   (       )

8% of 20 =
                   (       )

50% of 20 =
                   (       )

50% of 7 =
                   (       )

4% of 5 =
                   (       )

3% of 70 =
                   (       )

6% of 6 =
                   (       )

5% of 2 =
                   (       )

          +[         ]

40% of 70 =
                   ( 28 )

90% of 2 =
                   (       )

60% of 40 =
                   (       )

9% of 4 =
                   (       )

5% of 9 =
                   (       )

2% of 8 =
                   (       )

40% of 3 =
                   (       )

60% of 2 =
                   (       )

70% of 5 =
                   (       )

          +[         ]

20% of 80 =
                   ( 16 )

9% of 60 =
                   (       )

60% of 20 =
                   (       )

4% of 60 =
                   (       )

90% of 30 =
                   (       )

6% of 90 =
                   (       )

70% of 80 =
                   (       )

5% of 30 =
                   (       )

5% of 4 =
                   (       )

          +[         ]

       ++[[            ]]