题目内容
①
②-32+(-3)2+(-5)2×(-)-0.32÷|-0.9|
②-32+(-3)2+(-5)2×(-)-0.32÷|-0.9|
①- ②-20.1
①
=÷(-)-×(-)-0.5×2÷
=-×+×-0.5×2×2
=-+-2
=-+-
=-
=-
② -32+(-3)2+(-5)2×(-)-0.32÷|-0.9|
=-9+9+25×(-)-0.09÷0.9
=0-20-0.1
=-20.1
=÷(-)-×(-)-0.5×2÷
=-×+×-0.5×2×2
=-+-2
=-+-
=-
=-
② -32+(-3)2+(-5)2×(-)-0.32÷|-0.9|
=-9+9+25×(-)-0.09÷0.9
=0-20-0.1
=-20.1
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