题目内容
怎样简便就怎样算
| 76×105+24×105 | 0.25×32×1.25 | 38.5-1.46-5.54 |
| 0.27×99+0.27 | 0.7+3.9+4.3+6.1 | 41×10.1. |
(1)76×105+24×105,
=(76+24)×105,
=100×105,
=10500;
(2)0.25×32×1.25,
=0.25×4×8×1.25,
=(0.25×4)×(8×1.25),
=1×10,
=10;
(3)38.5-1.46-5.54,
=38.5-(1.46+5.54),
=38.5-7,
=31.5;
(4)0.27×99+0.27,
=0.27×(99+1),
=0.27×100,
=27;
(5)0.7+3.9+4.3+6.1,
=(0.7+4.3)+(3.9+6.1),
=5+10,
=15;
(6)41×10.1,
=41×(10+0.1),
=41×10+41×0.1,
=410+4.1,
=414.1.
=(76+24)×105,
=100×105,
=10500;
(2)0.25×32×1.25,
=0.25×4×8×1.25,
=(0.25×4)×(8×1.25),
=1×10,
=10;
(3)38.5-1.46-5.54,
=38.5-(1.46+5.54),
=38.5-7,
=31.5;
(4)0.27×99+0.27,
=0.27×(99+1),
=0.27×100,
=27;
(5)0.7+3.9+4.3+6.1,
=(0.7+4.3)+(3.9+6.1),
=5+10,
=15;
(6)41×10.1,
=41×(10+0.1),
=41×10+41×0.1,
=410+4.1,
=414.1.
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