diff --git a/erpnext/manufacturing/doctype/work_order/work_order.py b/erpnext/manufacturing/doctype/work_order/work_order.py
index 5e4dcf22431..fe2115c7022 100644
--- a/erpnext/manufacturing/doctype/work_order/work_order.py
+++ b/erpnext/manufacturing/doctype/work_order/work_order.py
@@ -979,14 +979,14 @@ class WorkOrder(Document):
 
 		for d in self.get("operations"):
 			precision = d.precision("completed_qty")
-			qty = flt(d.completed_qty, precision) + flt(d.process_loss_qty, precision)
+			qty = flt(flt(d.completed_qty, precision) + flt(d.process_loss_qty, precision), precision)
 			if not qty:
 				d.status = "Pending"
-			elif flt(qty) < flt(self.qty):
+			elif qty < flt(self.qty, precision):
 				d.status = "Work in Progress"
-			elif flt(qty) == flt(self.qty):
+			elif qty == flt(self.qty, precision):
 				d.status = "Completed"
-			elif flt(qty) <= max_allowed_qty_for_wo:
+			elif qty <= flt(max_allowed_qty_for_wo, precision):
 				d.status = "Completed"
 			else:
 				frappe.throw(_("Completed Qty cannot be greater than 'Qty to Manufacture'"))