Question

thuc hien phep tinh

73 . 35 + 27 . 19 - 20 . 73 + 81 . 27 + 85 . 73

Answer 1

73 . 35 + 27 . 19 - 20 . 73 + 81 . 27 + 85 . 73

= 73 . ( 35 - 20 + 85 ) + 27. ( 19 + 81 )

= 73 . 100 + 27. 100

= ( 73 + 27 ) . 100

= 100 . 100

= 10 000

Answer 2

73. 35+ 27.19- 20. 73+ 81. 27+ 85. 73

= 73.(35+ 85 - 20) + 27.(19+81)

=73.100 +27.100

=100.(27+73)

=100.100

=10000

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