Adding
68+43=?
=111
7x7
=49
50-7
=43
32 or 76
<76
12 or 98
>98
66+1
=67
8x8
=64
67-6
=61
45 or 54
<54
38 or 47
>38
123+123
=246
10x9
=90
54-9
=45
243 or 423
<423
67 or 76
>67
456+456
=102
9x7
=63
43-21
=22
978 or 678
<978
75 or 54
>54
789+123
=912
8x12
=96
94-56
=42
16,789 or 16,786
<16,789
345,000 or 543,000
>345,000