"Using Fractions to Express the Size of Possibilities" Possibility PPT Courseware 2

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"Using Fractions to Express the Size of Possibilities" Possibility PPT Courseware 2

(1) There are 6 balls in total. The probability of getting a red ball is 1/2, so ( ) red balls should be placed.

(2) There are 9 balls in total. The probability of getting a red ball is 2/3. ( ) red balls should be placed.

(3) The probability of touching a red ball is 1/3. A total of ( ) balls should be placed, of which ( ) are red balls.

Consolidate and apply

There is a traffic light at an intersection. The yellow light is on for 5 seconds, the red light is on for 25 seconds, and the green light is on for 30 seconds. Please analyze: if you pass through it at any time, you will encounter the possibility of encountering a yellow light, a red light, or a green light. sex.

Total time: 5+25+30=60 (seconds)

The probability of encountering a yellow light: 5/60=1/12

Probability of encountering a red light: 25/60=5/12

The probability of encountering a green light: 30/60=1/2

The supermarket holds a shopping prize event. As long as you shop over 100 yuan, you will have a chance to win. You can spin on the turntable once. The first prize will be an induction cooker, the second prize will be a thermos cup, and the third prize will be a washing powder. bag.

(1) Guess what the winning rules are?

First Prize Red Zone 1/8

(2) If the pointer rotates 80 times, how many times might it stop in the red area?

Stopped in the red zone maybe 10 times.

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"Using Fractions to Express the Size of Possibilities" Possibility PPT Courseware:

"Using Fractions to Express the Size of Possibilities" Possibility PPT courseware gives you a blank cube. Please make it yourself. Write 1, 2, and 3 on each side so that the possibility of 3 facing up is 1/2. How to write it? Write 1 on one side, 2 on two sides, and 3 on three sides. Write 1 for two sides and one side...

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Update Time: 2024-10-19

This template belongs to Mathematics courseware Jiangsu Education Edition Sixth Grade Mathematics Volume 1 industry PPT template

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