2018 25 | | | | | | | | | | | | | | 2018 6 26 | | | | | | | | | | | | | | | 2018 18 | | | 2018 312 | | | | | | | | | | | | | | | | | 50 | 30 20 | | | | | | | | | | | | | | | 2018 2019 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1. | 15 | | 500 | 100 | | 2. | | | | | | | | | | 2018 7 | 20 | | 2018 | | | | | 1. | | | | | | | | | | | | 2. | | | | | | | 3. | | | | | 4. | | | 5. | | | | | | | 6. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1. | | | | | | | 2. 2018 | | | | 4 9 | 8 3 | 3. 6 | | 6÷8024×16.74= 1.4 | 6÷8024×23.39= 1.5 | 6÷8024×23.98= 1.7 | 6÷8024×16.13= 1.4 | 4. 30 | 5.4 10.5 | 9.7 4.4 | 5. 20 | | 20÷8030×16.75.4= 4.5 | 20÷8030×23.310.5= 5 | 20÷8030×23.99.7= 5.8 | 20÷8030×16.14.4= 4.7 | | | |