Question

2.47×6.5+75.3×0.65怎么简便计算？

Answer 1

解：2.47×6.5+75.3×0.65等于（ 65 ）
∵已知需求出2.47×6.5+75.3×0.65等于多少
∴2.47 × 6.5 + 75.3 × 0.65
= 0.65 × （2.47 × 10 + 75.3）
= 65/100 × （24.7 + 75.3）
= 13/20 × 100
= 65
答：2.47×6.5+75.3×0.65等于65

Answer 2

2.47×6.5+75.3×0.65简便计算？
解:原式=2.47×6.5+7.53×10×0.65
=6.5×（2.47+7.53）
=6.5×10
=65
分析:
运用乘法结合律计算。

Answer 3

2.47×6.5+75.3×0.65
=24.7×0.65+75.3×0.65
=0.65×(24.7+75.3)
=65.

Answer 4

2.47×6.5+75.3×0.65
=2.47×6.5+7.53×6.5
=6.5(2.47+7.53)
=6.5×10
=65