5.6X4.5+5.5用简便运算

2025-05-23 09:44:41
推荐回答(4个)
回答1:

=5.5×4.5+0.1×4.5+5.5
=5.5×(4.5+1)+0.45
=5.5×4.6+0.45
=25.3+0.45
=25.75

回答2:


回答3:


回答4:

5.6X4.5+5.5
=25.2+5.5
=30.7
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