This activity was easy. No programming language required work, maybe that's why I feel it's easy to complete.

planning.md

@@ -37,19 +37,39 @@ return digit_names[number]
 ## Integers under 20
 If the integer is under 10, then use the procedure described above. 
 Otherwise, ... (this is where you take over!)
-
+digit_names2 = [
+    "ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", 
+    "eighteen", "nineteen"
+]
+to get the digit, we devide the number by 10, and consider the remainder. 
+return dignt_names2 [number%10]
 ## Integers under 100
-
-
+If the integer is under 20, use the previous procedure. Otherwise, for the numbers from 20 to 99, 
+we do this. 
+digit_names3 = [
+    "twenty", "thirty" , ....... "eighty", "ninety"
+]
+We take first digit, get the name from the digit_names3. 
+Digit 1 = digit_names3 [number//10-2]
+add hypen and add digit names [number%10]if the second digit is not zero. Else, add nothing. 
 ## Integers under 1000
-
+Digit 1 = digit_names [number//100] 
+add "hundred" 
+R1 = number%100
+If R1 is not zero, we add "and", then we call Integers under 100 procedure on R1. 
 
 ## Integers under 1000000
+Q1 = number//1000
+We call Intergers under 1000 procedure on Q1
+We add "thousand" 
+R1 = number%1000
+If R1 is not zero, we call Integers under 1000 procedure on R1
 
 
 ## Negative integers down to -1 million
 We won't deal with negative integers in this problem set, 
 but how would you deal with a negative integer, using the 
 functions above?
-
-
+Number multiped by negative 1, we treat it as a new number. 
+We call the same function as before (now it's positive number)
+We write "negative" in the begining of the answer.