0.88×3.2+0.44×3.6
=0.44×2×3.2+0.44×3.6
=0.44×(6.4+3.6)
=0.44×10
=4.4
方法二:
=0.11×8×3.2+0.11×4×3.6
=0.11×(8×3.2+4×3.6)
=0.11×(25.6+14.4)
=0.11×40
匿名回答于2024-05-21 19:38:10