Step-by-step explanation:

50 - (10.95 + 14.20) =
50 - 25.15 =
24.85
Hope this helps.
I think you add the exponents im not sure haven't done it in long time
400×10=4000
400×2=800
50×10=500
50×2=100
2×10=20
2×2=4
4000+800+500+100+20+4=5,424
Check answer by multiplying 452 and 12
452×12=5,424