1, a car from Chengde to Beijing, in order to do the whole journey? 0? 6. It is 64 kilometers from Beijing. How many kilometers is it from Chengde to Beijing? Answer: 1-? 0? 6=? 0? 4 64÷? 0? A: It's 256 kilometers from Chengde to Beijing. A Japanese chemical factory produced 9,800 boxes of laundry soap in June, three-sevenths more than planned. How many boxes of laundry soap do you plan to produce? Answer:1+3/7 =19800 ÷10/7 = 6860 (boxes) A: It is planned to produce 6860 boxes of laundry soap. The toy factory plans to produce a batch of toy cars, and has completed four fifths of the plan at present. How many toy cars are there in this batch? Answer 1: scheme: it is planned to produce x toy cars x- four fifths x= 190 one fifth x= 190 x= 190÷ one fifth x=950 answer 2: 1- four fifths. Uncle Zhang picked a small car of watermelon. After selling two thirds, there are 30 left. How many watermelons did Uncle Zhang pick? Answer:1-2/3 =1/3 30 ÷1/3 = 90 (pieces) A: Uncle Zhang picked 90 watermelons. 5. Car A travels 144 meters from place A to place B, and there are still two-fifths of the whole journey. How many kilometers is it between A and B? Answer:1-2/5 = 3/5144 ÷ 3/5 = 240 (km) A: The distance between Party A and Party B is 240 km.