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用简便方法计算,写出简算过程.600÷25÷8980-138-16224×20525×108×4527+143+273.
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用简便方法计算,写出简算过程.
| 600÷25÷8 | 980-138-162 | 24×205 | 25×108×4 | 527+143+273. |
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答案和解析
解(1)600÷25÷8,
=600÷(25×8),
=600÷200,
=3;
(2)980-138-162,
=980-(138+162),
=980-300,
=680;
(3)24×205,
=24×(200+5),
=24×200+24×5,
=4800+120,
=4920;
(4)25×108×4,
=(25×4)×108,
=100×108,
=10800;
(5)527+143+273,
=(527+273)+143,
=800+143,
=943;
=600÷(25×8),
=600÷200,
=3;
(2)980-138-162,
=980-(138+162),
=980-300,
=680;
(3)24×205,
=24×(200+5),
=24×200+24×5,
=4800+120,
=4920;
(4)25×108×4,
=(25×4)×108,
=100×108,
=10800;
(5)527+143+273,
=(527+273)+143,
=800+143,
=943;
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