算一算,想一想,你能发现规律吗?32×9= 56×9= 96×9= 125×9=320﹣32= 560﹣56= 960﹣96= 1250﹣125=
36.3×5.5+6.37×55.
999×999﹣2×999+1.
2.5×(1.9+1.9+1.9+1.9)
÷20.
2008×+200.8×4.3+20.08×8.