题目内容

口算我最棒!
1
7
×
1
3
=
5
8
×
3
5
=
1
4
×
3
8
×4
=
(
1
7
+
1
6
)×42
=
3
4
×
1
6
=
2
5
×9+
2
5
=
3
4
×5-
3
4
=
(
1
3
+
1
2
)×6
=
16×
1
3
×6
=
①3×
1
7
×
1
3
=
1
7
; ②
5
8
×
3
5
=
3
8
; ③
1
4
×
3
8
×4=
3
8

④(
1
7
+
1
6
)×42=13; ⑤
3
4
×
1
6
=
1
8
;⑥
2
5
×9+
2
5
=4;
3
4
×5-
3
4
=3; ⑧(
1
3
+
1
2
)×6=5; ⑨16×
1
3
×6=32.
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