直接写得数． 3992+2118= = 3.6×= 2.3÷1.6×3.2=3.86+5.24= = 5.75﹣（）= 0.125÷=4.02﹣2.03= = =
简便计算 375﹣98 500﹣56﹣44 89+233+511+377+567+123．
①1993+1994+1995+1996+1997+1998+1999+2000= ②（0.75×42.7+57.3﹣0.573×25）÷3×7972=
计算． 0.25×0.03×413×3.89+0.13×100+1.3×51.110.1×87．
63×．
①782﹣（534﹣218） ②786﹣479+279 ③875﹣（347+375） ④786+479﹣279 ⑤972+52﹣804﹣52+804 ⑥849﹣828+528﹣36﹣164．
= 3.6×
= 2.3÷1.6×3.2=
= 5.75﹣（
）= 0.125÷
=
= 
=
．
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