問題文全文(内容文)：
マイナス×マイナスがプラスになるのはなぜ？

問題文全文(内容文)：
(1)(-5.2)+(+2.6)=
(2)$(-\frac{1}{3})+(-\frac{1}{6})$
(3)(-3.6)+(+2.3)=
(4)$(-\frac{1}{4})+(-\frac{1}{2})$
(5){(+2)+(-5)}+(-4)=
(6)(+2)+{(-5)+(-4)}=
(7)(-7)-(+4)=
(8)(-3)-(-6)=

問題文全文(内容文)：
Let's enjoy oriental mathematics for just a little while.
You will discover a cute world from mathematics.
Everyone in the world should love and be good at mathematics.

We are introducing the entrance exam questions for Japanese high schools.
It's an important issue for you to understand the basics of mathematics.
Would you like to solve this math problem and check out our commentary?

問題文全文(内容文)：
$ a \lt o,b \lt 0 $のとき,
$ a+b,a-b,ab,\dfrac{a}{b}$のうちで,式の値が最も小さいものはどれか.

奈良県公立高等学校過去問

問題文全文(内容文)：
①半径9cm、面積36π$cm^2$のおうぎ形の中心角の大きさと弧の長さをもとめよう！

②半径6cm、弧の長さ9πcmのおうぎ形の中心角の大きさと面積をもとめよう！