6+2=
5+3=
8-5=
6+3=
9-6=
8-4=
4+2=
9-3=
2+6=
9-7=
4+5=
8-8=
3+3=
9-8=
2+7=
9-5=
3+2=
8-6=
3+5=
7-5=
3+6=
5+1=
7-3=
8-3=
3+4=
2+5=
8-7=
7+2=
8
5+3=
8
8-5=
3
6+3=
9
9-6=
3
8-4=
4
4+2=
6
9-3=
6
2+6=
8
9-7=
2
4+5=
9
8-8=
0
3+3=
6
9-8=
1
2+7=
9
9-5=
4
3+2=
5
8-6=
2
3+5=
8
7-5=
2
3+6=
9
5+1=
6
7-3=
4
8-3=
5
3+4=
7
2+5=
7
8-7=
1
7+2=
9
答案:
8 8 3 9 3 4 6 6 8 2 9 0 6 1 9 4 5 2 8 2 9 6 4 5 7 7 1 9
$\begin{array}{r} 9-\\ \end{array}\\ \begin{array}{r} 0\\ 3\\ 5\\ 7\\ 9\end{array} \begin{array}{r} =\\ \\ \\ \\ \end{array}\begin{array}{r} =\\ \\ \\ \\ \begin{array}{r}
$\begin{array}{r} \\ \\ \\ \\ \end{array}\begin{array}{r} \\ \\ \\ \\ \begin{array}{r} 1\\ 5\\ 7\\ 2\\ 3\end{array} \begin{array}{r} +\\ \\ \\ \\ \end{array}\\ \\ \\ \\ \begin{array}{r} 8\\ 3\\ 2\\ 6\\ 5\end{array} \begin{array}{r} =\\ \\ \\ \\ \end{array}\begin{array}{r} =\\ \\ \\ \\ \begin{array}{r}
9
\\ 6
\\ 4
\\ 2
\\ 0
\end{array}\begin{array}{r} =\\ \\ \\ \\ \begin{array}{r} □ \\ □ \\ □ \\ □ \\ □ $$\begin{array}{r} \\ \\ \\ \\ \end{array}\begin{array}{r} \\ \\ \\ \\ \begin{array}{r} 1\\ 5\\ 7\\ 2\\ 3\end{array} \begin{array}{r} +\\ \\ \\ \\ \end{array}\\ \\ \\ \\ \begin{array}{r} 8\\ 3\\ 2\\ 6\\ 5\end{array} \begin{array}{r} =\\ \\ \\ \\ \end{array}\begin{array}{r} =\\ \\ \\ \\ \begin{array}{r}
9
\\ 8
\\ 9
\\ 8
\\ 8
\end{array}\begin{array}{r} =\\ \\ \\ \\ \begin{array}{r} □ \\ □ \\ □ \\ □ \\ □ $
答案:
9 6 4 2 0 9 8 9 8 8
3. 在○里填上“>”“<”或“=”。(建议3分钟完成)
2+2
7-5
6+2
6-3
9-6
3+4
2+3
7-5
7+2
4+5
6-6
2+4
2+2
<
57-5
<
86+2
=
86-3
<
49-6
<
43+4
>
5+12+3
=
4+17-5
>
5-47+2
>
7-24+5
>
8-26-6
<
7-62+4
<
3+5
答案:
< < = < < > = > > > < <
4$\xrightarrow{+3}$
6$\xrightarrow{-2}$
7
$\xrightarrow{+2}$9
$\xrightarrow{-6}$3
$\xrightarrow{+5}$8
6$\xrightarrow{-2}$
4
$\xrightarrow{+5}$9
$\xrightarrow{-9}$0
$\xrightarrow{+8}$8
答案:
7 9 3 8 4 9 0 8
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