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9+9, for £1
99+9, for £2
99+99, for £4
999+99, for £8
999+999, for £16
9-9, for £1
99-9, for £2
99-99, for £4
999-99, for £8
999-999, for £16
x for £1
x for £2
120x120, for £4
12x99, for £8
9x999, for £16
÷ for £1
÷ for £2
÷ for £4
÷ 99, for £8
÷ big, for £16
Begin play.
Go to the animals.