Question

9.99×222+3.33×333+3.33，的简便运算？

Answer 1

9.99×222+3.33×333+3.33=9.99×222+9.99×111+3.33=9.99×333+3.33=999×3.33+3.33=1000×3.33=3330

Answer 2

9.99×222+3.33×333+3.33
=3.33（3×222+333+1）
=3.33×1000
=3330

Answer 3

9.99×222+3.33×333+3.33
=3×3.33×222+3.33×333+3.33
=3.33×（3×222+333+31）
=3.33×1000
=3330

Answer 4

9.99x222+3.33x333+3.33
=3.33X3x222+3.33x333+3.33
=3.33x666+3.33x333+3.33
=3.33x(666+333+1)
=3.33x1000
=3330

Answer 5

9.99×222+3.33×333+3.33
=3.33×3×222+3.33×333+3.33×1
=3.33×(666+333+1)
=3.33×1000
=3330