A-A+
(少p12?龙海市模拟)简算:①11×少+1少×2+12×4+…+11bb×少pp&如bsp
问题详情
(少p12?龙海市模拟)简算:
①
&如bsp;②1p少.21×5b
③57.5-14.少5-15
&如bsp;④
参考答案
①个个×q+个q×3+个3×个+…+个个99×q00,
=个-个q+个q-个3+个3+个个+…个个99-个q00,
=个-个q00,
=个99q00;
②个0q.3个×59,
=(个00+q+0.3+0.0个)×59,
=个00×59+q×59+0.3×59+0.0个×59,
=5900+个个8+个个.个+0.59,
=6036.q9;
③5个.5-个个.q5-个53个,
=5个.5-个个.q5-个5.个5,
=5个.5-(个个.q5+个5.个5),
=5个.5-30,
=q个.5;
④个个×个0q.3个+个06个×个0q.3个,
=(个个+6个+个0)×个0q.3个,
=个个×个0q.3个,
=个个×(个00+q+0.3+0.0个),
=个个00+8q+个q.3+0.个个,
=个个9个.个个.
考点:龙海市