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▲
©2024 数学クラブ http://sugaku.club/
月 日( )
● 計算しなさい
[1Q3-00]
(1)
45
5
5
(
+
)
(2)
45
5
2
(
+
)
(3)
5
125
(
−7
+
)
(4)
2
2
(
−
2
)
(5)
7
175
5
(
+
)
(6)
7
7
5
(
+
)
(7)
7
3
7
(
+
)
(8)
3
12
(
−
1
)
(9)
125
5
(
−10
+
)
(10)
5
125
(
−3
+
)
©2024 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
45
5
5
(
+
)
5
5
5
=
3
(
+
)
=
3
×
5
+
3
×
5
=
30
(2)
45
5
2
(
+
)
5
5
2
=
3
(
+
)
10
=
3
×
5
+
3
10
=
15
+
3
(3)
5
125
(
−7
+
)
5
5
=
(
−7
+
5
)
5
=
−7
+
5
×
5
5
=
−7
+
25
(4)
2
2
(
−
2
)
2
=
2
−
2
2
=
2
−
2
(5)
7
175
5
(
+
)
7
7
5
=
(
5
+
)
35
=
5
×
7
+
35
=
35
+
(6)
7
7
5
(
+
)
35
=
7
+
35
=
7
+
(7)
7
3
7
(
+
)
21
=
+
7
21
=
+
7
(8)
3
12
(
−
1
)
3
3
=
(
2
−
1
)
3
=
2
×
3
−
3
=
6
−
(9)
125
5
(
−10
+
)
5
5
=
5
(
−10
+
)
5
=
−50
+
5
×
5
5
=
−50
+
25
(10)
5
125
(
−3
+
)
5
5
=
(
−3
+
5
)
5
=
−3
+
5
×
5
5
=
−3
+
25