一、连一连。

答案
二、在()里填合适的数。
$\begin{array} { l l l } { 3 × ( \quad ) = 6 3 } & { ( \quad ) × 2 = 4 6 } & { 5 × ( \quad ) = 5 5 } \\ { ( \quad ) × 6 = 6 0 } & { 8 × ( \quad ) = 8 8 } & { ( \quad ) × 3 = 9 6 } \\ { 2 × ( \quad ) = 6 8 } & { ( \quad ) × 3 = 6 0 } & { 2 × ( \quad ) = 6 2 } \\ { ( \quad ) × 3 = 3 9 } & { 2 × ( \quad ) = 4 0 } & { ( \quad ) × 3 = 6 6 } \\ { 7 × ( \quad ) = 7 7 } & { ( \quad ) × 2 = 8 2 } & { 2 × ( \quad ) = 8 8 } \end{array}$
$\begin{array} { l l l } { 3 × ( \quad ) = 6 3 } & { ( \quad ) × 2 = 4 6 } & { 5 × ( \quad ) = 5 5 } \\ { ( \quad ) × 6 = 6 0 } & { 8 × ( \quad ) = 8 8 } & { ( \quad ) × 3 = 9 6 } \\ { 2 × ( \quad ) = 6 8 } & { ( \quad ) × 3 = 6 0 } & { 2 × ( \quad ) = 6 2 } \\ { ( \quad ) × 3 = 3 9 } & { 2 × ( \quad ) = 4 0 } & { ( \quad ) × 3 = 6 6 } \\ { 7 × ( \quad ) = 7 7 } & { ( \quad ) × 2 = 8 2 } & { 2 × ( \quad ) = 8 8 } \end{array}$
答案
21;23;11
10;11;32
34;20;31
13;20;22
11;41;44
10;11;32
34;20;31
13;20;22
11;41;44
三、在$◯$里填“$>$”“$<$”或“$=$”。
$\begin{array} { l l l } { 9 9 ÷ 3 ◯ 4 × 8 } & { 5 × 1 1 ◯ 1 2 × 4 } & { 2 3 × 3 ◯ 4 × 2 1 } \\ { 2 2 × 2 ◯ 8 8 ÷ 2 } & { 6 6 ÷ 3 ◯ 2 × 1 2 } & { 2 × 1 1 ◯ 8 8 ÷ 4 } \\ { 4 × 1 2 ◯ 2 3 × 2 } & { 1 4 × 2 ◯ 4 8 ÷ 2 } & { 2 8 ÷ 2 ◯ 3 9 ÷ 3 } \\ { 9 0 ÷ 3 ◯ 4 × 1 0 } & { 8 × 1 0 ◯ 4 0 × 2 } & { 3 × 1 3 ◯ 5 × 8 } \\ { 3 × 1 2 ◯ 6 8 ÷ 2 } & { 7 7 ÷ 7 ◯ 6 0 ÷ 6 } & { 6 4 ÷ 2 ◯ 9 6 ÷ 3 } \end{array}$
$\begin{array} { l l l } { 9 9 ÷ 3 ◯ 4 × 8 } & { 5 × 1 1 ◯ 1 2 × 4 } & { 2 3 × 3 ◯ 4 × 2 1 } \\ { 2 2 × 2 ◯ 8 8 ÷ 2 } & { 6 6 ÷ 3 ◯ 2 × 1 2 } & { 2 × 1 1 ◯ 8 8 ÷ 4 } \\ { 4 × 1 2 ◯ 2 3 × 2 } & { 1 4 × 2 ◯ 4 8 ÷ 2 } & { 2 8 ÷ 2 ◯ 3 9 ÷ 3 } \\ { 9 0 ÷ 3 ◯ 4 × 1 0 } & { 8 × 1 0 ◯ 4 0 × 2 } & { 3 × 1 3 ◯ 5 × 8 } \\ { 3 × 1 2 ◯ 6 8 ÷ 2 } & { 7 7 ÷ 7 ◯ 6 0 ÷ 6 } & { 6 4 ÷ 2 ◯ 9 6 ÷ 3 } \end{array}$
答案
三、> > <
= < =
> > >
< = <
> > =
= < =
> > >
< = <
> > =
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