Fill in the numbers to make the working correct:
$13-8=3+10-8$13−8=3+10−8
$=$=$3+\editable{}$3+
$=$=$\editable{}$
$12-4=8$12−4=8. Use this to find:
Know how many ones, tens, and hundreds are in whole numbers to at least 1000.
Generalise that whole numbers can be partitioned in many ways