Odpowiedź:
Poziom D
a) 7 * 8/14 = 1 * 8/2 = 8/2 = 4
b) 20/30 * 15 = 20/2 * 1 = 10
c) 33 * 4/11 = 3 * 4 = 12
d) 3/12 * 16 = 3/3 * 4 = 1 * 4 = 4
e) 30 * 7/10 = 3 * 7 = 21
f) 6/22 * 33 = 6/2 * 3 = 3 * 3 = 9
g) 12 * 5/6 = 2 * 5 = 10
h) 17/20 * 34 = 17/10 * 17 = 289/10 = 28 9/10 = 28,9
i) 10 * 7/15 = 2 * 7/3 = 14/3 = 4 2/3