Question

3.9×7.6+3.4-3.6简便计算

3.9×7.6+3.4-3.6简便计算

Answer 1

如图

追问

3.9×7.6+3.9×3.4-3.6简便计算

3.9×7.6+3.9×3.4-3.6简便计算

追答

Answer 2

3.9×7.6+3.4-3.6
=4×7.6-0.1×7.6-（3.6-3.4）
=30.4-0.76-0.2
=30.4-0.96
=30.4-1+0.04
=29.44