3. Calculate : 1) 
from 63 2)
28 % from 40
4. Find 0,8a + b if a = 
and b = 4,5
5. Calculate and check.
1) 2,5 - a = 
2) t : 0,4 = 
6. Find 1 % 
; from 150; from 200; from
; 
.
| What have you learned?
3. Calculate : 1)
4. Find 0,8a + b if a =
5. Calculate and check. 1) 2,5 - a =
6. Find 1 % |