Odpowiedź:
zad 12
480÷24= 20
20÷10=2
30×8×2= 480
1. prawda
24×5×4=480
2.prawda
zad 13
odp B
zad 14
30 + 35 + 18 + 36 + 21 = 140
140÷5= 28
30km to 6h
5km to 1h
35km to 8h 45min
1km to 15min
4km to 1h
18km to 3h
6km to 1h
36km to 8h
4,5km to 1h
21km to 3h 30min
1km to 10min
6km to 1h
6h + 8h 45min + 3h + 8h + 3h 30min= 1755min
1755÷5=351 min
140 × 0.15= 21
odp D
