题目内容
脱式计算.
| 800-22×33 | (62-19)×25 | 14×(57-39) |
| 25×32×125 | (15.26+3.74)×26 | 18.7+30.03-0.9. |
(1)800-22×33,
=800-726,
=74;
(2)(62-19)×25,
=43×25,
=1075;
(3)14×(57-39),
=14×18,
=252;
(4)25×32×125,
=25×(4×8)×125,
=(25×4)×(125×8),
=100×1000,
=100000;
(5)(15.26+3.74)×26,
=19×26,
=494;
(6)18.7+30.03-0.9,
=48.73-0.9,
=47.83.
=800-726,
=74;
(2)(62-19)×25,
=43×25,
=1075;
(3)14×(57-39),
=14×18,
=252;
(4)25×32×125,
=25×(4×8)×125,
=(25×4)×(125×8),
=100×1000,
=100000;
(5)(15.26+3.74)×26,
=19×26,
=494;
(6)18.7+30.03-0.9,
=48.73-0.9,
=47.83.
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