1298, counting on in ones: , , , working
2363, counting on in tens: , , , working
3574 + 100 = working
4488, counting on in tens: , , , working
5269, counting back in tens: , , , working
6897 + 10 = working
7333, counting on in hundreds: , , , working
8898, counting on in ones: , , , working
9273, counting on in tens: , , , working
10923, counting back in tens: , , , working