Question 22: Apply the properties of addition and multiplication to calculate quickly: 25 . 5 . 4 . 27 . 2

25 . 5 . 4 . 27 . 2

= (25 . 4) . ( 5 . 2) . 27

= 100.10.27 = 27 000

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Question 22: Apply the properties of addition and multiplication to calculate quickly: 25 . 5 . 4 . 27 . 2

25 . 5 . 4 . 27 . 2

= (25 . 4) . ( 5 . 2) . 27

= 100.10.27 = 27 000

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