Two-digit Subtraction
98-42
56
121-45
76
40+27
67
What do you call it when you rename a ten into ten ones?
Unbundling
42-16
26
148-57
91
112
12 tens= ___
120
78-49
29
246-151
95
124+85
209
What is 248 in unit form?
2 hundreds 4 tens 8 ones