l l l l o o o o o
l l l o o o
78
11+32=
43
50+6=
56
l l l l l l l
____ + ____ =_____
____ tens + ____ tens=____ tens
40+30=70
4 tens + 3 tens= 7 tens
33+22
55
l l o o o o o o o
l l l l l o o o o o
82
67+23
90
83+5
88
l l l l l l l l l
____+____=_____
____ tens +____ tens=___ tens
50+40=90
5 tens + 4 tens= 9 tens
78+15
93
l l l l l o o o
l o o o o o o
69
54+27=
81
44+9
53
l l l l l l
____+____=_____
____ tens +____ tens=___ tens
20+40=60
2 tens + 4 tens= 6 tens
31+45
76
l l l l l l o o o o o
l l o o o o o o
90
46+36
42
9+70
76
l l l l
____+____=_____
____ tens +____ tens=___ tens
20+20=40
2 tens + 2 tens = 4 tens
29+64
93
l l l o o o o o o o
l l o o o o o o o
64
48+46
94
50+6
56
l l l l l l l l l
____+____=_____
____ ten +____ tens=___ tens
10+80=90
1 ten + 8 tens= 9 tens
16+72
88