diff --git a/Work/bounce.py b/Work/bounce.py
index 3660ddd82..b5f456cad 100644
--- a/Work/bounce.py
+++ b/Work/bounce.py
@@ -1,3 +1,10 @@
 # bounce.py
 #
 # Exercise 1.5
+height = 100 # meters
+reboundRate = 0.6
+nBounces = 10
+
+for iB in range(nBounces):
+    height = height*reboundRate
+    print(round(height, 4))
\ No newline at end of file
diff --git a/Work/hello.py b/Work/hello.py
new file mode 100644
index 000000000..fd0370739
--- /dev/null
+++ b/Work/hello.py
@@ -0,0 +1,6 @@
+# hello.py
+print('hello world')
+
+name = input('Enter your name: ')
+print('Hello', name, end='')
+print(', nice to meet you')
\ No newline at end of file
diff --git a/Work/mortgage.py b/Work/mortgage.py
index d527314e3..3826d0f37 100644
--- a/Work/mortgage.py
+++ b/Work/mortgage.py
@@ -1,3 +1,26 @@
 # mortgage.py
 #
 # Exercise 1.7
+principal = 500000.0
+rate = 0.05
+payment = 2684.11
+total_paid = 0.0
+
+extraPaymentStartMonth = 61  
+extraPaymentEndMonth = 108
+extraPayment = 1000
+
+iMonth = 1
+while principal > 0:
+    
+    if iMonth >= extraPaymentStartMonth and iMonth < extraPaymentEndMonth:
+        tmpExtraPayment = extraPayment
+    else:
+        tmpExtraPayment = 0
+    principal = principal * (1+rate/12) - (payment + tmpExtraPayment)
+    total_paid = total_paid + payment + tmpExtraPayment
+    print(iMonth, total_paid, principal)
+    iMonth = iMonth + 1
+
+print('Total paid:', total_paid)
+print('Number of Months:', iMonth-1)
\ No newline at end of file
diff --git a/Work/sears.py b/Work/sears.py
new file mode 100644
index 000000000..d59dc3b9a
--- /dev/null
+++ b/Work/sears.py
@@ -0,0 +1,14 @@
+# sears.py
+bill_thickness = 0.11/10/100 # 0.11 mm converted to meters
+sears_height = 442
+num_bills = 1 
+day = 1
+
+while num_bills*bill_thickness < sears_height:
+    print(day, num_bills, num_bills*bill_thickness)
+    day = day + 1
+    num_bills = num_bills * 2
+
+print('Number of bills:', num_bills)
+print('Number of days:', day)
+print('Final height: ', num_bills*bill_thickness)