Question

7.4x3.6十2.4x6.4简便计算求解答

Answer 1

7.4x3.6十2.4x6.4
=(2.4+5)x3.6十2.4x6.4
=2.4x3.6+5×3.6十2.4x6.4
=2.4×（3.6+6.4）+18
=2.4×10+18
=24+18
=42

Answer 2

=7.4*3.6+2.4*（10-3.6）
=7.4*3.6+2.4*10-2.4*3.6
=（7.4-2.4）*3.6+24
=5*3.6+24
=18+24
=42