diff --git "a/\345\216\237\345\206\254\346\242\205/node 02.21 \347\254\254\344\270\200\346\254\241\344\275\234\344\270\232/modulara.js" "b/\345\216\237\345\206\254\346\242\205/node 02.21 \347\254\254\344\270\200\346\254\241\344\275\234\344\270\232/modulara.js"
new file mode 100644
index 0000000000000000000000000000000000000000..5a4bacbecc732f75ccfa1faea4705a6bf5538b51
--- /dev/null
+++ "b/\345\216\237\345\206\254\346\242\205/node 02.21 \347\254\254\344\270\200\346\254\241\344\275\234\344\270\232/modulara.js"	
@@ -0,0 +1,6 @@
+function calculate (a,b,c){
+    console.log(a+b+c);
+    console.log(c-a);
+    console.log(c-b);
+};
+module.exports = calculate;
\ No newline at end of file
diff --git "a/\345\216\237\345\206\254\346\242\205/node 02.21 \347\254\254\344\270\200\346\254\241\344\275\234\344\270\232/modulb.js" "b/\345\216\237\345\206\254\346\242\205/node 02.21 \347\254\254\344\270\200\346\254\241\344\275\234\344\270\232/modulb.js"
new file mode 100644
index 0000000000000000000000000000000000000000..ad3c2148482a6c4e977cbc0f7b130c6755a5c7bd
--- /dev/null
+++ "b/\345\216\237\345\206\254\346\242\205/node 02.21 \347\254\254\344\270\200\346\254\241\344\275\234\344\270\232/modulb.js"	
@@ -0,0 +1,3 @@
+let  calculate = require('./modulara.js');
+
+calculate(50,10,22);
\ No newline at end of file