Number pyramid – adding – Crick January 29, 2016October 18, 2020 adminAdd & Subtract Add to BookmarksInteractive to explore totals at top when numbers at bottom are changed. Investigative. KS2Open Activity Other Suggested Activities Number CruncherNumber Cruncher http://www.mathszone.co.uk/images/thumbnail-59.jpg Use a series of addition, subtraction, and multiplication equations to reach your… Adding 9 Fairy - ICT GamesAdd nine by adding 10 then taking away 1. Y1/2 Digit menu - Crickaddition, subtraction to 20, to 100, 1 or 2 digits, multiplication up to 5X or…