《2025年黄冈小状元同步计算天天练四年级数学下册人教版》

1. 算一算，填一填。
(1)$270 + 160 =$
$\begin{array}{r}270\\+160\\\hline\end{array}$验$\begin{array}{r}\square\square\square\\ - 270\\\hline\end{array}$或$\begin{array}{r}\square\square\square\\ - 160\\\hline\end{array}$
$\begin{array}{r}\square\square\square\\\end{array}$
(2)$317 + 291 =$
$\begin{array}{r}\square\square\square\\+\square\square\square\\\hline\end{array}$验$\begin{array}{r}\square\square\square\\-\square\square\square\\\hline\end{array}$
(3)$453 + 277 =$
$\begin{array}{r}\square\square\square\\+\square\square\square\\\hline\end{array}$验$\begin{array}{r}\square\square\square\\-\square\square\square\\\hline\end{array}$

答案：

2. 计算下面各题，并利用加法各部分间的关系进行验算。
(1)$460 + 180 =$
(2)$367 + 283 =$
(3)$504 + 398 =$
(4)$486 + 235 =$

答案：