2.9ᠧ0.45+0.29ᠧ4.2+0.029ᠧ13的简便计算

2025-04-23 13:12:50
推荐回答(2个)
回答1:

=0.29×4.5+0.29×4.2+0.29×1.3=0.29×(4.5+4.2+1.3)=0.29×10=2.9

回答2:

2.9