Question

3×4.56+3.83 ×5.44的简便算

Answer 1

3.8 X 4.56 + 3.83 X 5.44
= 3.8 X 4.56 + (3.8 + 0.03) X 5.44
= 3.8 X 4.56 + 3.8 X 5.44 + 0.03 X 5.44
= 3.8 X (4.56 + 5.44) + 0.3 X 0.544
= 3.8 X 10 + 0.1632
= 38.1632

Answer 2

3×4.56+3.83×5.44
=3×4.56+3×5.44+0.83×5.44
=3×（4.56+5.44）+0.83×5.44
=3×10+0.83×5.44
=30+4.5152
=34.5152