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Very difficult!
Select the right operation
your score
../sonsmp3/sixteen.mp3
???
3 x 4
2 x 8
20 - 8 + 1
20 / 2
2 x 9
19 - 2
(3 x 6) + 1
7 + 8
16 + 4
20 - 6
../sonsmp3/twenty.mp3
???
3 x 4
2 x 8
20 - 8 + 1
20 / 2
2 x 9
19 - 2
(3 x 6) + 1
7 + 8
16 + 4
20 - 6
../sonsmp3/seventeen.mp3
???
3 x 4
2 x 8
20 - 8 + 1
20 / 2
2 x 9
19 - 2
(3 x 6) + 1
7 + 8
16 + 4
20 - 6
../sonsmp3/fourteen.mp3
???
3 x 4
2 x 8
20 - 8 + 1
20 / 2
2 x 9
19 - 2
(3 x 6) + 1
7 + 8
16 + 4
20 - 6
../sonsmp3/twelve.mp3
???
3 x 4
2 x 8
20 - 8 + 1
20 / 2
2 x 9
19 - 2
(3 x 6) + 1
7 + 8
16 + 4
20 - 6
../sonsmp3/ten.mp3
???
3 x 4
2 x 8
20 - 8 + 1
20 / 2
2 x 9
19 - 2
(3 x 6) + 1
7 + 8
16 + 4
20 - 6
../sonsmp3/eighteen.mp3
???
3 x 4
2 x 8
20 - 8 + 1
20 / 2
2 x 9
19 - 2
(3 x 6) + 1
7 + 8
16 + 4
20 - 6
../sonsmp3/fifteen.mp3
???
3 x 4
2 x 8
20 - 8 + 1
20 / 2
2 x 9
19 - 2
(3 x 6) + 1
7 + 8
16 + 4
20 - 6
../sonsmp3/nineteen.mp3
???
3 x 4
2 x 8
20 - 8 + 1
20 / 2
2 x 9
19 - 2
(3 x 6) + 1
7 + 8
16 + 4
20 - 6
../sonsmp3/thirteen.mp3
???
3 x 4
2 x 8
20 - 8 + 1
20 / 2
2 x 9
19 - 2
(3 x 6) + 1
7 + 8
16 + 4
20 - 6
your score
OK
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