Question

1.11×9.9＋8.88×8.9怎么简算？

八分之七乘八的多少？

Answer 1

1.11×9.9+8.88×8.9

=1.11×9.9+1.11×8×8.9

=1.11×(9.9+71.2)

=1.11×81.1

=90.021

7/8×8=7

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Answer 2

• 1.11×9.9＋8.88×8.9
  =1.11×(10-0.1)+8.88×(10-1.1)
  =11.1-0.111+88.8-9.768
  =99.9-(0.111+9.768)
  =99.9-9.879
  =90.021
            7/8*8=7

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Answer 3

1.11×9.9＋8.88×8.9
=1.11×(10-0.1)+8.88×(10-1.1)
=11.1-0.111+88.8-9.768
=99.9-(0.111+9.768)
=99.9-9.879
=90.021

7/8×8=7

Answer 4

八分之七乘八=7，1.11×9.9＋8.88×8.9=1.11x9.9+1.11x8x8.9=1.11(9.9+71.2)=1.11x79.2=8.88