问题描述:
用简便方法计算.569+68+132+31 | 125×88 | 2300-165-35 |
125×(8+4) | 3200÷25÷4 | 156×l0l-156. |
最佳答案:
(1)569+68+132+31,
=(569+31)+(68+132),
=600+200,
=800;
(2)125×88,
=(125×8)×11,
=1000×11,
=11000;
(3)2300-165-35,
=2300-(165+35),
=2300-200,
=2100;
(4)125×(8+4),
=125×8+125×4,
=1000+500,
=1500;
(5)3200÷25÷4,
=3200÷(25×4),
=3200÷100,
=32;
(6)156×l0l-156,
=156×(101-1),
=156×100,
=15600.