100-43=57, 56÷14=4, 18×5=90, 630÷70=9, 550÷5=110,
69÷3=23, 14×30=420, 24+86=110, 60×80=4800, 960÷80=12,
180×30=5400, 720÷60=12, 750÷50=15, 17×50=850, 450÷90=5,
36×20=720.
100-43=57, 56÷14=4, 18×5=90, 630÷70=9, 550÷5=110,
69÷3=23, 14×30=420, 24+86=110, 60×80=4800, 960÷80=12,
180×30=5400, 720÷60=12, 750÷50=15, 17×50=850, 450÷90=5,
36×20=720.