Question

19.98*37+199.8*2.3+9.99*80=简算

Answer 1

19.98*37+199.8*2.3+9.99*80
=199.8*3.7+199.8*2.3+9.99*80
=199.8*(3.7+2.3)+9.99*80
=199.8*6+99.9*8
=199.8*6+199.8*4
=199.8*(6+4)
=199.8*10
=1998

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Answer 2

=199.8*3.7+199.8*2.3+9.99*80
=199.8*6+99.9*8
=600+99.8*6+99.8*8+0.8
=600+99.8*14+0.8
=600+1400+0.8-0.2*14
=2000+0.8-2.8
=1998

Answer 3

19.98*37+199.8*2.3+9.99*80
=19.98*37+19.98*23+19.98*40
=19.98*(37+23+40)
=19.98*100
=1998