| Category | Format | Size |
|---|---|---|
| People's Education Press fourth grade mathematics volume 2 | pptx | 6 MB |
"Commutative Law of Addition" Addition and Subtraction of Decimals PPT Courseware
Description
"Commutative Law of Addition" Addition and Subtraction of Decimals PPT Courseware
Commutative law of addition: When two numbers are added, the positions of the addends are swapped, and the sum remains unchanged.
10 + 56 = 56 + 10
18 + 60 = 60 + 20
Use the commutative law of addition to fill in the appropriate numbers in the brackets:
766+589=589+( )
( )+55=55+420
300+600=( )+( )
a+15=( )+( )
Judgment: Does the following calculation comply with the commutative law of addition?
270+380=380+270
b + 800= 800 +b
45 + 56 = 56 + 48
a + 10 = 100 + a
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"Commutative Law of Addition and Associative Law of Addition" Operational Law PPT Courseware 2:
"Commutative Law of Addition and Associative Law of Addition" PPT Courseware 2 Learning Objectives 1. During the process of exploring the commutative law and associative law of addition, discover the commutative law and associative law of addition, and be able to express them with letters. 2. On the basis of understanding the commutative law of addition and the associative law of addition..
"Commutative Law of Addition and Associative Law of Addition" Operational Law PPT Courseware:
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Update Time: 2024-06-19
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