"Happy Farm Tour" PPT courseware 11

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"Happy Farm Tour" PPT courseware 11

1. Situation introduction

This year, 30 tons of pomegranates will be produced

Production increased by 25% compared with last year

How many tons of pomegranates were produced last year?

What mathematical information do you know from the picture?

What questions can you ask based on this information?

2. Cooperation and exploration

How many tons of pomegranates were produced last year?

Let’s first figure out what “25%” means.

"One-tenth" means one-tenth, which is 10% when written as a percentage.

"Twenty-five percent" means two and a half tenths, written as a percentage, it is 25%.

3. Independent practice

1. Rewrite the following numbers into percentages and percentages into numbers.

60%=60% 50%=50% 45%=45% 100%=100%

30%=30% 10%=10% 75%=75% 72%=72%

2. The organizer of the football match decided to give away 1,400 tickets to students for free, accounting for 5% of the total number of seats in the football stadium. How many seats does this football stadium have?

Total number of football stadium seats × 5% = number of tickets given away for free

Solution: Suppose there are x seats in this football stadium.

x × 5% = 1400

0.05 x = 1400

x = 28000

Answer: This football stadium has a total of 28,000 seats.

3. Hongxing Village’s cotton output last year was 100 tons. This year’s output increased by 20% compared with last year. How many tons of cotton is this year’s output?

100 × (1+20%)

= 100 × 1.2

= 120 (tons)

Answer: This year’s cotton production is 120 tons.

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Update Time: 2024-09-06

This template belongs to Mathematics courseware Qingdao Edition Sixth Grade Mathematics Volume 2 industry PPT template

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