题目内容
脱式计算.
| 2000-45×24+996 | 160+(76+60)×30 | 680÷2×(1289-756) |
| (85+79)×(133-73) | 732-(174×25-3960) |
(1)2000-45×24+996,
=2000-1080+996,
=920+996,
=1916;
(2)160+(76+60)×30,
=160+136×30,
=160+4080,
=4240;
(3)680÷2×(1289-756),
=680÷2×533,
=340×553,
=181220;
(4)(85+79)×(133-73),
=164×60,
=9840;
(5)732-(174×25-3960),
=732-(4350-3960),
=732-390,
=342.
=2000-1080+996,
=920+996,
=1916;
(2)160+(76+60)×30,
=160+136×30,
=160+4080,
=4240;
(3)680÷2×(1289-756),
=680÷2×533,
=340×553,
=181220;
(4)(85+79)×(133-73),
=164×60,
=9840;
(5)732-(174×25-3960),
=732-(4350-3960),
=732-390,
=342.
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