diff --git a/addition/add b/addition/add
old mode 100644
new mode 100755
index e69de29..a804392
--- a/addition/add
+++ b/addition/add
@@ -0,0 +1,24 @@
+#!/bin/sh
+# add $2 to $1 and return
+[ -z "${1##*.*}" -o -z "${2##*.*}" ] && { # if float # dylanaraps/pure-sh-bible#check-if-a-number-is-a-float 
+# modified to check $1 & $2
+  f1="${1##*.}"; f2="${2##*.}" # whole is ${1%.$f1} # dot required
+  # eq is $1+$2 -- $f1 + $f2 -- then add $1 & $2
+  wo="$((${1%.$f1}+${2%.$f2}))" # whole digit, this is preset and not redeclared
+  # this is because we may need to carry
+  while [ "$f1" ]; do
+    while [ "$f2" ]; do
+      next2="${f2#?}"; next1="${f1#?}"
+      [ "$((${f1%$next1} + ${f2%$next2}))" -gt 9 ] && {
+        oo="$o"; [ "$o" ] && {
+          : $((oo+=1))
+        } || : $((wo+=1))
+        o="$((${f1%$next1} + ${f2%$next2}))"; o="${o#?}"; o="$oo$o"; unset oo # unset to save ram
+      } || o="$o$((${f1%$next1} + ${f2%$next2}))"
+      f2="$next2"; f1="${next1}" 
+    done
+  done
+  echo "$wo.${o:-0}"
+} || { # if not just do basic addition
+  echo $(($1+$2))
+}