Solve below problems using the sutra “All from 9 and the Last from 10”:
a 100 – 44 b 1000 – 747
c 6000 – 642 d 900 – 92
e 1000 – 44 f 5000 – 84
g 800 – 58 h 9000 – 286
i 10000 – 3421 j 300 – 84
k 10000 – 537 l 400 – 91
m 9000 – 88 n 900 – 27
o 30000 – 33 p 90000 – 999