Răspuns :
240 x 5 : 100 x 7: 2 = 42
1) 240 × 5 = 1200
2) 1200 : 100 = 12
3) 12 × 7 = 84
4) 84 : 2 = 42
109 × 4 : 2 = 218
1) 109 × 4 = 436
2) 436 : 2 = 218
1) 240 × 5 = 1200
2) 1200 : 100 = 12
3) 12 × 7 = 84
4) 84 : 2 = 42
109 × 4 : 2 = 218
1) 109 × 4 = 436
2) 436 : 2 = 218