"Finding Patterns" Multiplication PPT Courseware

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"Finding Patterns" Multiplication PPT Courseware

1. Tell the number directly.

9×6 = 8×11 = 12×3 = 5×13 =

24×2 = 17×3 = 40×4 = 5×61 =

A frog has one mouth, two eyes and four legs;

Two frogs have two mouths, four eyes and eight legs;

Three frogs have three mouths, six eyes and twelve legs;

Please go on.

What patterns did you discover?

A few frogs, a few mouths, a few eyes, and four legs.

There are n frogs with n mouths, 2n eyes and 4n legs.

my discovery

When one factor remains unchanged and the other factor is increased by 10 times, the product also increases by 10 times.

When both factors are multiplied 10 times, the product is multiplied 100 times.

Inductive calculation method

The multiplication calculation method when the factor is an integer: first calculate the number before the 0 at the end of the factor, and then add the omitted 0 in the factor after the resulting product.

1. A bus is limited to 40 people. How many people can 20 buses carry?

2. An airplane flies 800 kilometers per hour. How many kilometers can it fly in 20 hours?

Buy 25 sets of large-sized sportswear and 45 sets of small-sized sportswear.

(1) How much do you pay for each type of sportswear?

(2) How much money should be paid in total?

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For more information about the PPT courseware "Find the Rules of Multiplication", please click the "Find the Rules of Multiplication ppt" ppt tab.

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Update Time: 2024-10-20

This template belongs to Mathematics courseware Beijing Normal University third grade mathematics volume 2 industry PPT template

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