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multiplication
Adding
100
50x3=?
150
100
5+5=?
55
200
9x9=?
81
200
2+2+?
22
300
55x2=?
110
300
9+9=?
99
400
20x4=?
60
400
8+8=
88
500
90x5=?
450
500
7+7=?
14