"Strange Cloned Cow" PPT Courseware 3

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"Strange Cloned Cow" PPT Courseware 3

1. Situation introduction

At birth, "Jianjian's" chest circumference was 0.77 meters.

The chest circumference of "strong" is 0.03 meters larger than that of healthy.

What was Zhuang Zhuang's bust size when he was born?

The body length of "Jianjian" is 0.72 meters.

The body length of "Zhuang Zhuang" is 0.76 meters.

How much longer was "Zhuangzhuang" than "Jianjian" when he was born?

"Jianjian" is 0.76 meters tall.

"Zhuangzhuang" is 0.79 meters tall.

How much taller was "Strong" than "Jianjian" at birth?

"Jianjian" weighs 38 kilograms.

"Zhuangzhuang" weighs 38.04 kilograms.

How much heavier was "Strong" at birth than "Jianjian"?

2. Cooperation and exploration

What was Zhuang Zhuang's bust size when he was born?

0.77 + 0.03 =0.8 (meter)

7 0.01 plus 3 0.01 equals 10 0.01, which is equal to 0.1.

Seven 0.1 plus one 0.1 equals eight 0.1, which is equal to 0.8.

decimal point alignment

Adding "0" or removing "0" from the end of the decimal will keep the size of the decimal unchanged.

Think about it, what should you pay attention to when adding decimals?

Decimal addition and subtraction points are aligned,

Count from right to left.

When ten years pass, you must keep in mind,

Don't be careless if you retreat one and act ten.

3. Independent practice

1. A sharp eye distinguishes right from wrong.

2. Calculate.

3. After an astronaut with a height of 170.2 cm flew into space, his height increased by 5.5 cm over a period of time. What is his height in centimeters at this time?

170.2 + 5.5 = 175.7 (cm)

Answer: His height at this time is 175.7 cm.

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"Strange Cloned Cow" PPT Courseware 2:

"Strange Cloned Cow" PPT Courseware 2 Review: 1. Comparing the sizes of numbers 0.3 0.30 2. Properties of decimals: adding 0 or removing 0 from the end of a decimal will keep the size of the decimal unchanged. 3.0.77 is composed of ( ) 0.01; 0.77 can also be regarded as composed of ( ) 0.1..

"Strange Cloned Cow" PPT courseware:

"Strange Cloned Cow" PPT Courseware 1. Situation Introduction Can you calculate this question? 765+372+635+628 What mathematical information do you know from the picture? Can you calculate this question? Commutative law of addition: �+b=b+� Associative law of addition: (�+b)+c=�..

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Update Time: 2024-07-02

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

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