"Animal World" PPT Courseware 3

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"Animal World" PPT Courseware 3

Look at the words and say the color

Look at the words below and quickly say "the color of the words"!

Please note: It’s about the color of the words, not the reading of the words!

yellow green red black purple

green black purple red yellow

Purple red black yellow green

red yellow green purple black

Independent thinking and collaborative exploration

Collaborate with deskmates, scribble and write.

Score: 4/10 It is composed of ( ) 1/10,

Decimal: ( ) is ( ) 0.1.

Fraction: ( ) It is composed of ( ) 1/10,

Decimal: ( ) is ( ) 0.01.

Numbers like 0.1, 0.25, 0.365... that are used to express tenths, hundredths, thousandths... are called decimals.

The counting units of decimals are: one-tenth, one-hundredth, one-thousandth... recorded as 0.1, 0.01, 0.001...

1. Test you:

● 0.6 means ( ), there are ( ) 1/10s in it, which is ( ) 0.1.

● 0.37 means ( ), which is composed of 37 ( ).

● 0.083 represents ( ), and there are ( ) and ( ) in it.

● 735 0.001 are ( ), that is ( ).

2. Intellectual questions and answers:

If you see a decimal, write it as a fraction. If you see a fraction, write it as a decimal.

0.0005_______ 9653/10000__________

do you know?

Decimals were first proposed and used by our country. As early as more than 1,700 years ago, when solving a mathematical problem, the ancient Chinese mathematician Liu Hui (from Shandong) proposed that the parts below the single digit of an integer that cannot be labeled are called differentials.

In the 13th century AD, Zhu Shijie, a mathematician from the Yuan Dynasty of my country, proposed the name of decimals. In the West, decimals appeared very late, more than 1,300 years later than in China.

Keywords: Animal World Teaching Courseware, Qingdao Edition Fourth Grade Mathematics Volume 2 PPT Courseware Download, Fourth Grade Mathematics Slide Courseware Download, Animal World PPT Courseware Download, .PPT format;

For more information about the "Animal World" PPT courseware, please click the Animal World PPT tab.

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Update Time: 2024-10-06

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

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