diff --git a/src/gradeProblem.ts b/src/gradeProblem.ts
new file mode 100644
index 0000000..049ea04
--- /dev/null
+++ b/src/gradeProblem.ts
@@ -0,0 +1,22 @@
+function plusOrMinus(noteRange: number): string{
+    if(noteRange < 3){
+        return "-"
+    }
+    if(noteRange > 7){
+        return "+";
+    }
+    return "";
+}
+
+function grade(note: number): string {
+    if(note > 90){
+        return "A" + plusOrMinus(note - 90);
+    }
+    if(note > 80){
+        return "B" + plusOrMinus(note - 80);
+    }
+    return "";
+}
+
+console.log(grade(81));
+