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计算,能使用简便方法吗?27×12-286÷13(339-67)×15÷2425×294×44000÷125÷818×45+18×552.39+14.4+0.61.
题目详情
计算,能使用简便方法吗? 27×12-286÷13 (339-67)×15÷24 25×294×4 4000÷125÷8 18×45+18×55 2.39+14.4+0.61. |
27×12-286÷13
(339-67)×15÷24
25×294×4
4000÷125÷8
18×45+18×55
2.39+14.4+0.61.
27×12-286÷13
(339-67)×15÷24
25×294×4
4000÷125÷8
18×45+18×55
2.39+14.4+0.61.
27×12-286÷13
(339-67)×15÷24
25×294×4
4000÷125÷8
18×45+18×55
2.39+14.4+0.61.
27×12-286÷13
(339-67)×15÷24
25×294×4
4000÷125÷8
18×45+18×55
2.39+14.4+0.61.
▼优质解答
答案和解析
(1)27×12-286÷13,
=324-22,
=302;
(2)(339-67)×15÷24,
=272×
,
=170;
(3)25×294×4,
=(25×4)×294,
=100×294,
=29400;
(4)4000÷125÷8,
=4000÷(125×8),
=4000÷1000,
=4;
(5)18×45+18×55,
=(45+55)×18,
=100×18,
=1800;
(6)2.39+14.4+0.61
=2.39+0.61+14.4,
=3+14.4,
=17.4. (1)27×12-286÷13,
=324-22,
=302;
(2)(339-67)×15÷24,
=272×
,
=170;
(3)25×294×4,
=(25×4)×294,
=100×294,
=29400;
(4)4000÷125÷8,
=4000÷(125×8),
=4000÷1000,
=4;
(5)18×45+18×55,
=(45+55)×18,
=100×18,
=1800;
(6)2.39+14.4+0.61
=2.39+0.61+14.4,
=3+14.4,
=17.4. (1)27×12-286÷13,
=324-22,
=302;
(2)(339-67)×15÷24,
=272×
,
=170;
(3)25×294×4,
=(25×4)×294,
=100×294,
=29400;
(4)4000÷125÷8,
=4000÷(125×8),
=4000÷1000,
=4;
(5)18×45+18×55,
=(45+55)×18,
=100×18,
=1800;
(6)2.39+14.4+0.61
=2.39+0.61+14.4,
=3+14.4,
=17.4. (1)27×12-286÷13,
=324-22,
=302;
(2)(339-67)×15÷24,
=272×
,
=170;
(3)25×294×4,
=(25×4)×294,
=100×294,
=29400;
(4)4000÷125÷8,
=4000÷(125×8),
=4000÷1000,
=4;
(5)18×45+18×55,
=(45+55)×18,
=100×18,
=1800;
(6)2.39+14.4+0.61
=2.39+0.61+14.4,
=3+14.4,
=17.4.
5 8 5 5 5 8 8 8 ,
=170;
(3)25×294×4,
=(25×4)×294,
=100×294,
=29400;
(4)4000÷125÷8,
=4000÷(125×8),
=4000÷1000,
=4;
(5)18×45+18×55,
=(45+55)×18,
=100×18,
=1800;
(6)2.39+14.4+0.61
=2.39+0.61+14.4,
=3+14.4,
=17.4.
(1)27×12-286÷13, =324-22, =302; (2)(339-67)×15÷24, =272×
=170; (3)25×294×4, =(25×4)×294, =100×294, =29400; (4)4000÷125÷8, =4000÷(125×8), =4000÷1000, =4; (5)18×45+18×55, =(45+55)×18, =100×18, =1800; (6)2.39+14.4+0.61 =2.39+0.61+14.4, =3+14.4, =17.4. |
=324-22,
=302;
(2)(339-67)×15÷24,
=272×
5 |
8 |
=170;
(3)25×294×4,
=(25×4)×294,
=100×294,
=29400;
(4)4000÷125÷8,
=4000÷(125×8),
=4000÷1000,
=4;
(5)18×45+18×55,
=(45+55)×18,
=100×18,
=1800;
(6)2.39+14.4+0.61
=2.39+0.61+14.4,
=3+14.4,
=17.4.
=324-22,
=302;
(2)(339-67)×15÷24,
=272×
5 |
8 |
=170;
(3)25×294×4,
=(25×4)×294,
=100×294,
=29400;
(4)4000÷125÷8,
=4000÷(125×8),
=4000÷1000,
=4;
(5)18×45+18×55,
=(45+55)×18,
=100×18,
=1800;
(6)2.39+14.4+0.61
=2.39+0.61+14.4,
=3+14.4,
=17.4.
=324-22,
=302;
(2)(339-67)×15÷24,
=272×
5 |
8 |
=170;
(3)25×294×4,
=(25×4)×294,
=100×294,
=29400;
(4)4000÷125÷8,
=4000÷(125×8),
=4000÷1000,
=4;
(5)18×45+18×55,
=(45+55)×18,
=100×18,
=1800;
(6)2.39+14.4+0.61
=2.39+0.61+14.4,
=3+14.4,
=17.4.
=324-22,
=302;
(2)(339-67)×15÷24,
=272×
5 |
8 |
=170;
(3)25×294×4,
=(25×4)×294,
=100×294,
=29400;
(4)4000÷125÷8,
=4000÷(125×8),
=4000÷1000,
=4;
(5)18×45+18×55,
=(45+55)×18,
=100×18,
=1800;
(6)2.39+14.4+0.61
=2.39+0.61+14.4,
=3+14.4,
=17.4.
5 |
8 |
=170;
(3)25×294×4,
=(25×4)×294,
=100×294,
=29400;
(4)4000÷125÷8,
=4000÷(125×8),
=4000÷1000,
=4;
(5)18×45+18×55,
=(45+55)×18,
=100×18,
=1800;
(6)2.39+14.4+0.61
=2.39+0.61+14.4,
=3+14.4,
=17.4.
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