Question

3.5×2.7-0.3×0.55-0.3×0.5-0.3×0.5等多少？

3.5×2.7 - 0.3×0.55 - 0.3×0.5 - 0.3×0.5

Answer 1

答案：8.985。
3.5×2.7-0.3×0.55-（0.3×0.5+0.3×0.5）
=9.45-0.165-0.3
=8.985

Answer 2

3.5×2.7-0.3×0.55-0.3×0.5-0.3×0.5
=3.5×2.7-(0.3×0.55+0.3×0.5+0.3×0.5)
=3.5×2.7-【0.3×(0.55+0.5+0.5)】
=3.5×2.7-0.3×1.55
=9.45-0.465
=8.985