问题
解答题
脱式计算.(怎样简便就怎样计算)
100.6×10.5-10.06×105;
5.8×101.
答案
(1)100.6×10.5-10.06×105
=10.06×105-10.06×105
=(10.06-10.06)×105
=0×105
=0
(2)5.8×101
=5.8×(100+1)
=5.8×100+5.8×1
=580+5.8
=585.8
脱式计算.(怎样简便就怎样计算)
100.6×10.5-10.06×105;
5.8×101.
(1)100.6×10.5-10.06×105
=10.06×105-10.06×105
=(10.06-10.06)×105
=0×105
=0
(2)5.8×101
=5.8×(100+1)
=5.8×100+5.8×1
=580+5.8
=585.8