multiplication
7x8=
56
36/6=
6
54+46
100
20-10=
10
what has 4 sides
quadrillateral
9x9=
81
81/9
9
91+109
200
900-200=
700
12x12=
144
90/9
10
36+36=
72
1,000-734=
266
13x9
117
144/12
12
456+789=
1,245
800-321=
479
21x14=
294
168/14
12
1,234+1,623=
2,857
1,234-456=
778