"Happy Break" PPT courseware

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"Happy Break" PPT courseware

Think about it? ? ?

The information we can extract is:

(1) The dancing students of Class Three (1) are divided into two groups, with 20 people in each group.

(2) The dancing students in class three (2) are divided into three groups, with 12 people in each group.

Collaborative exploration

Three (1) How many people are dancing in total?

20×2=_____ (person)

Calculated using different methods:

Method 1: Give it a try

20*2 means the addition of two 20s, 20+20=40

Multiply 2 tens by 2 to get 4 tens, which is 40.

Three (2) How many people are dancing in total?

12×3=______(person)

practice

2×3= 3×5=

20×3= 3×50=

5×4= 4×2=

50×4= 40×2=

Consolidation exercises

1. (Compare who is the top scorer in oral arithmetic)

40×6 4×40 20×8

50×3 7×20 9×50

60×5 8×50 70×7

2. Look at question 3 on page 12 of the textbook: The frog jumps on the lotus leaf.

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Update Time: 2024-11-20

This template belongs to Mathematics courseware Qingdao Edition Third Grade Mathematics Volume 1 industry PPT template

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