"Mixed Fraction Operations" PPT Courseware 2

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"Mixed Fraction Operations" PPT Courseware 2

50 vehicles were sold on the first day. The trading volume on the second day increased by 1/5 compared with the first day.

How many vehicles were sold the next day? Tell me how you think about it.

Can you chart the volume for the next day?

50＋50×1/5＝50＋10＝60 (vehicles)

Answer: The transaction volume on the second day was 60 vehicles.

practice

1. During the National Day Golden Week, the ticket revenue of the amusement park on the first day was 960 yuan, and the second day increased by 1/6 compared with the first day.

⑴ Draw a picture to show the ticket revenue for the next day.

⑵ Calculate how much the ticket revenue is the next day.

960＋960×1/6＝1120 (yuan)

960×(1+1/6)＝1120 (yuan)

2. When water turns into ice, its volume increases by approximately 1/10. How many cubic decimeters of ice can be formed from 20L of water?

20＋20×1/10＝20＋2＝22（dm³）

The cross-country race is 12km in total, of which the mountainous section accounts for 1/3, the seaside section accounts for 1/6, and the rest is highway section.

⑴How many kilometers longer is the road around the mountain than the road along the seaside?

12×(1/3-1/6)＝2(km)

⑵If the entire race is extended by 5/12 next year, how many kilometers will it be?

12×(1+5/12)＝17(km)

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Update Time: 2024-10-01

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