问题
填空题
计算:(-0.125)2009×82010=______.
答案
∵82010=8×82009,
∴(-0.125)2009×82010,
=(-0.125)2009×8×82009,
=8×(-0.125)2009×82009,
=8×(-0.125×8)2009,
=8×(-1)2009,
=-8.
计算:(-0.125)2009×82010=______.
∵82010=8×82009,
∴(-0.125)2009×82010,
=(-0.125)2009×8×82009,
=8×(-0.125)2009×82009,
=8×(-0.125×8)2009,
=8×(-1)2009,
=-8.