3算一算
$25 + 4 =$
$47 - 8 =$
$56 - 20 =$
$20 + 16 =$
$33 + 7 =$
$37 + 8 =$
$26 + 13 =$
$42 + 24 =$
$36 - 15 =$
$73 + 7 =$
$41 + 50 =$
$62 - 2 =$
$35 + 11 =$
$50 + 10 =$
$68 - 28 =$
$25 + 7 =$
$53 - 23 =$
列竖式计算
$65 + 12 =$
$73 - 37 =$$$
$$54 + 46 =$$80 - 66 =$$


$39 + 35 =$
$53 - 24 =$$$
$$
$$17 + 49 =$$67 - 18 =$$

$25 + 4 =$
$47 - 8 =$
$56 - 20 =$
$20 + 16 =$
$33 + 7 =$
$37 + 8 =$
$26 + 13 =$
$42 + 24 =$
$36 - 15 =$
$73 + 7 =$
$41 + 50 =$
$62 - 2 =$
$35 + 11 =$
$50 + 10 =$
$68 - 28 =$
$25 + 7 =$
$53 - 23 =$
列竖式计算
$65 + 12 =$
$73 - 37 =$$$
$39 + 35 =$
$53 - 24 =$$$
答案
$25+4=29$;
$47-8=39$;
$56-20=36$;
$20+16=36$;
$33+7=40$;
$37+8=45$;
$26+13=39$;
$42+24=66$;
$36-15=21$;
$73+7=80$;
$41+50=91$;
$62-2=60$;
$35+11=46$;
$50+10=60$;
$68-28=40$;
$25+7=32$;
$53-23=30$;
$65 + 12 =77$;
$\begin{array}{r r r}& 6 & 5 \\ + & 1 & 2 \\ \hline & 7 & 7 \end{array}$
$73 - 37 =36$;
$\begin{array}{r r r}& 7 & 3 \\ - & 3 & 7 \\ \hline & 3 & 6 \end{array}$
$54 + 46 =100$;
$\begin{array}{r r r}& 5 & 4 \\ + & 4& 6 \\ \hline1& 0 & 0 \end{array}$
$80 - 66 =14$;
$\begin{array}{r r r}& 8 & 0 \\ - & 6 & 6 \\ \hline & 1 & 4 \end{array}$
$39 + 35 =74$;
$\begin{array}{r r r}& 3 & 9 \\ + & 3 & 5 \\ \hline & 7 & 4 \end{array}$
$53 - 24 =29$;
$\begin{array}{r r r}& 5 & 3 \\ - & 2 & 4 \\ \hline & 2 & 9 \end{array}$
$17 + 49 =66$;
$\begin{array}{r r r}& 1 & 7 \\ + & 4 & 9 \\ \hline & 6 & 6 \end{array}$
$67 - 18 =49$;
$\begin{array}{r r r}& 6 & 7 \\ - & 1 & 8 \\ \hline & 4 & 9 \end{array}$
$47-8=39$;
$56-20=36$;
$20+16=36$;
$33+7=40$;
$37+8=45$;
$26+13=39$;
$42+24=66$;
$36-15=21$;
$73+7=80$;
$41+50=91$;
$62-2=60$;
$35+11=46$;
$50+10=60$;
$68-28=40$;
$25+7=32$;
$53-23=30$;
$65 + 12 =77$;
$\begin{array}{r r r}& 6 & 5 \\ + & 1 & 2 \\ \hline & 7 & 7 \end{array}$
$73 - 37 =36$;
$\begin{array}{r r r}& 7 & 3 \\ - & 3 & 7 \\ \hline & 3 & 6 \end{array}$
$54 + 46 =100$;
$\begin{array}{r r r}& 5 & 4 \\ + & 4& 6 \\ \hline1& 0 & 0 \end{array}$
$80 - 66 =14$;
$\begin{array}{r r r}& 8 & 0 \\ - & 6 & 6 \\ \hline & 1 & 4 \end{array}$
$39 + 35 =74$;
$\begin{array}{r r r}& 3 & 9 \\ + & 3 & 5 \\ \hline & 7 & 4 \end{array}$
$53 - 24 =29$;
$\begin{array}{r r r}& 5 & 3 \\ - & 2 & 4 \\ \hline & 2 & 9 \end{array}$
$17 + 49 =66$;
$\begin{array}{r r r}& 1 & 7 \\ + & 4 & 9 \\ \hline & 6 & 6 \end{array}$
$67 - 18 =49$;
$\begin{array}{r r r}& 6 & 7 \\ - & 1 & 8 \\ \hline & 4 & 9 \end{array}$
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