Răspuns:
1. (14+84):7 =
98 : 7 = 14
sau
(14+84):7 =
14:7 + 84:7 =
2 + 12 =14
2. (12+32): 2=
44:2 =22
sau
(12+32):2 =
12:2 + 32:2 =
6 + 16 = 22
3. (64+32):4 =
96 : 4 = 26
sau
(64+32):4=
64:4 + 32:4 =
16 + 8 = 26
4.(12+32+24):2 =
68:2= 34
sau
(12+32+24):2 =
12:2 + 32:2 + 24:2=
6+16+12 = 34
5.(15+60+21):3 =
96 : 3 = 32
sau
(15+60+21):3 =
15:3 + 60:3 + 21:3 =
5 + 20 + 7 = 32