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7算一算
31+ 47 =
70- 50 =
39- 28 =
75- 35 =
29+ 40 =
70- 9 =
82+ 15 =
14+ 50 =
45+ 25 =
76- 26 =
88- 36 =
12+ 87 =
14+ 75 =
98- 47 =
35+ 45 =
23- 9 =
84- 40 =
31+ 47 =
70- 50 =
39- 28 =
75- 35 =
29+ 40 =
70- 9 =
82+ 15 =
14+ 50 =
45+ 25 =
76- 26 =
88- 36 =
12+ 87 =
14+ 75 =
98- 47 =
35+ 45 =
23- 9 =
84- 40 =
答案
31+47=78
70-50=20
39-28=11
75-35=40
29+40=69
70-9=61
82+15=97
14+50=64
45+25=70
76-26=50
88-36=52
12+87=99
14+75=89
98-47=51
35+45=80
23-9=14
84-40=44
70-50=20
39-28=11
75-35=40
29+40=69
70-9=61
82+15=97
14+50=64
45+25=70
76-26=50
88-36=52
12+87=99
14+75=89
98-47=51
35+45=80
23-9=14
84-40=44
列竖式计算
46- 28 =
()
()
()
90- 37 =
()
()
()
58- 28 =
()
()
()
60- 42 =
()
()
()
46- 28 =
()
()
()
90- 37 =
()
()
()
58- 28 =
()
()
()
60- 42 =
()
()
()
答案
$46 - 28=$
$\begin{array}{r r r}& \cancel{4} ^1& ^6\\ - &2&8\\ \hline&1&8\end{array}$
$90 - 37=$
$\begin{array}{r r r}& \cancel9 ^8& ^10\\ - &3&7\\ \hline&5&3\end{array}$
$58 - 28=$
$\begin{array}{r r r}&5&8\\ - &2&8\\ \hline&3&0\end{array}$
$60 - 42=$
$\begin{array}{r r r}& \cancel6 ^5& ^10\\ - &4&2\\ \hline&1&8\end{array}$
$\begin{array}{r r r}& \cancel{4} ^1& ^6\\ - &2&8\\ \hline&1&8\end{array}$
$90 - 37=$
$\begin{array}{r r r}& \cancel9 ^8& ^10\\ - &3&7\\ \hline&5&3\end{array}$
$58 - 28=$
$\begin{array}{r r r}&5&8\\ - &2&8\\ \hline&3&0\end{array}$
$60 - 42=$
$\begin{array}{r r r}& \cancel6 ^5& ^10\\ - &4&2\\ \hline&1&8\end{array}$
列竖式计算
33- 28 =
44- 29 =
62- 46 =
70- 25 =
33- 28 =
44- 29 =
62- 46 =
70- 25 =
答案
1.
$ \begin{array}{r} 33 \\ -28 \\ \hline 5 \end{array} $
2.
$ \begin{array}{r} 44 \\ -29 \\ \hline 15 \end{array} $
3.
$ \begin{array}{r} 62 \\ -46 \\ \hline 16 \end{array} $
4.
$ \begin{array}{r} 70 \\ -25 \\ \hline 45 \end{array} $
$ \begin{array}{r} 33 \\ -28 \\ \hline 5 \end{array} $
2.
$ \begin{array}{r} 44 \\ -29 \\ \hline 15 \end{array} $
3.
$ \begin{array}{r} 62 \\ -46 \\ \hline 16 \end{array} $
4.
$ \begin{array}{r} 70 \\ -25 \\ \hline 45 \end{array} $
