diff --git a/Question02-Expressions/.gitignore b/Question02-Expressions/.gitignore
new file mode 100644
index 0000000..84c048a
--- /dev/null
+++ b/Question02-Expressions/.gitignore
@@ -0,0 +1 @@
+/build/
diff --git a/Question02-Expressions/src/main/java/Question2_1.java b/Question02-Expressions/src/main/java/Question2_1.java
new file mode 100644
index 0000000..9f56a4e
--- /dev/null
+++ b/Question02-Expressions/src/main/java/Question2_1.java
@@ -0,0 +1,23 @@
+
+public class Question2_1 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		int sum, diff, mulch, div, rem;
+		
+		sum = 6 + 2;
+		diff = 6 - 2;
+		mulch = 6 * 2;
+		div = 6 / 2;
+		rem = 17 % 5;
+		
+		System.out.println("変数sum:" + sum);
+		System.out.println("変数diff:" + diff);
+		System.out.println("変数mulch:" + mulch);
+		System.out.println("変数div:" + div);
+		System.out.println("変数rem:" + rem);
+
+	}
+
+}
diff --git a/Question02-Expressions/src/main/java/Question2_2.java b/Question02-Expressions/src/main/java/Question2_2.java
new file mode 100644
index 0000000..9417e03
--- /dev/null
+++ b/Question02-Expressions/src/main/java/Question2_2.java
@@ -0,0 +1,14 @@
+
+public class Question2_2 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		String lastName = "太郎";
+		String firstName = "山田";
+		
+		System.out.println(firstName+lastName);
+
+	}
+
+}
diff --git a/Question02-Expressions/src/main/java/Question2_3.java b/Question02-Expressions/src/main/java/Question2_3.java
new file mode 100644
index 0000000..f23ec76
--- /dev/null
+++ b/Question02-Expressions/src/main/java/Question2_3.java
@@ -0,0 +1,15 @@
+
+public class Question2_3 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		int num = 10;
+		
+		num = num + 5;
+		
+		System.out.println(num);
+
+	}
+
+}
diff --git a/Question02-Expressions/src/main/java/Question2_4.java b/Question02-Expressions/src/main/java/Question2_4.java
new file mode 100644
index 0000000..6790445
--- /dev/null
+++ b/Question02-Expressions/src/main/java/Question2_4.java
@@ -0,0 +1,18 @@
+
+public class Question2_4 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		// error
+//		int sum;
+//		sum = 10 + 3.14;
+		
+		double sum;
+		sum = 10 + 3.14;
+		
+		System.out.println(sum);
+
+	}
+
+}
diff --git a/Question02-Expressions/src/main/java/Question2_5.java b/Question02-Expressions/src/main/java/Question2_5.java
new file mode 100644
index 0000000..c3ad978
--- /dev/null
+++ b/Question02-Expressions/src/main/java/Question2_5.java
@@ -0,0 +1,15 @@
+
+public class Question2_5 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		int age = 20;
+		int diff = 5;
+		
+		System.out.println("山田さんは"+age+"歳です。");
+		System.out.println(diff+"年後には"+(age+diff)+"歳になります。");
+
+	}
+
+}
diff --git a/Question02-Expressions/src/main/java/Question2_6.java b/Question02-Expressions/src/main/java/Question2_6.java
new file mode 100644
index 0000000..a01d7ad
--- /dev/null
+++ b/Question02-Expressions/src/main/java/Question2_6.java
@@ -0,0 +1,14 @@
+
+public class Question2_6 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		int numerator = 9;
+		int denominator = 2;
+		
+		System.out.println( (float)numerator/(float)denominator );
+
+	}
+
+}
diff --git a/Question02-Expressions/src/main/java/Question2_7.java b/Question02-Expressions/src/main/java/Question2_7.java
new file mode 100644
index 0000000..9f7ef0c
--- /dev/null
+++ b/Question02-Expressions/src/main/java/Question2_7.java
@@ -0,0 +1,18 @@
+
+public class Question2_7 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		int num;
+		
+		// error
+//		num = 1.0;
+		
+		num = (int)1.0;
+		
+		System.out.println(num);
+
+	}
+
+}
diff --git a/Question02-Expressions/src/main/java/Question2_8.java b/Question02-Expressions/src/main/java/Question2_8.java
new file mode 100644
index 0000000..19e6627
--- /dev/null
+++ b/Question02-Expressions/src/main/java/Question2_8.java
@@ -0,0 +1,17 @@
+
+public class Question2_8 {
+
+	public static void main(String[] args) {
+		// TODO 自動生成されたメソッド・スタブ
+		
+		int money = 1000;
+		int price = 580;
+		float taxRate = 0.08F;
+		
+		money = money - (int)( price*(1.0+taxRate) );
+		
+		System.out.println("残金は"+money+"円です。");
+
+	}
+
+}