Question

90.9×6.6+3.3×10.2。简便运算怎么算?

9.9×6.6+3.3×10.2的简便运算怎么算？

Answer 1

90.9×6.6+3.3×10.2
=90.9×6.6+3.3×2×5.1
=90.9×6.6+6.6×5.1
=6.6×（90.9+5.1）
=6.6×96
=633.6

Answer 2

90.9×6.6+3.3×10.2
=90.9×3.3×2+3.3×10.2
=181.8×3.3+3.3×10.2
=3.3×(181.8+10.2)
=3.3×192
=633.6