《2025年快乐口算四年级数学上册人教版》

1 口算。
$520×30= $
$460×50= $
$80×700= $
$11×800= $
$770×30= $
$103×30= $
$4×505= $
$710×60= $
$540×50= $
$6×630= $
$204×80= $
$42×400= $
$15×400= $
$101×44= $
$80×50= $

答案： $520 × 30 = 15600$
$460 × 50 = 23000$
$80 × 700 = 56000$
$11 × 800 = 8800$
$770 × 30 = 23100$
$103 × 30 = 3090$
$4 × 505 = 2020$
$710 × 60 = 42600$
$540 × 50 = 27000$
$6 × 630 = 3780$
$204 × 80 = 16320$
$42 × 400 = 16800$
$15 × 400 = 6000$
$101 × 44 = 4444$
$80 × 50 = 4000$

2
1. 将下列竖式补充完整。
$\begin{array}{r}361 \\× 34 \\\hline□ □ 44 \\□ □ 83 \\\hline□ □ □ 74 \\\end{array}\\ $
$\begin{array}{r}104 \\× 85 \\\hline5 □ □ \\8 □ □ \\\hline□ □ □ □ \\\end{array}\\\hline□ □ □ □ \\ $
2. 竖式计算。
$\begin{array}{r}360 \\× 80 \\\hline\end{array}\\\hline $
$\begin{array}{r}724 \\× 52 \\\hline\end{array}\\\hline $
$\begin{array}{r}410 \\× 12 \\\hline\end{array}\\\hline $
$\begin{array}{r}401 \\× 12 \\\hline\end{array}\\\hline $

答案： 1. $\begin{array}{r}361 \\× 34 \\\hline1444 \\1083 \\\hline12274 \\\end{array}$；$\begin{array}{r}104 \\× 85 \\\hline520 \\832 \\\hline8840 \\\end{array}$ 2. 28800；37648；4920；4812