##### Across

**1.**The ______ of fifteen and fifteen is thirty.**3.**Eleven take away three is ______ .**5.**Nine take away seven is ______ .**7.**Adding numbers together is called ______ .**9.**Thirty minus ten is ______ .**11.**Two plus three equals ______ .**12.**Four ______ four makes eight.**13.**Subtracting numbers is called ______ .

##### Down

**2.**Five and four ______ nine.**4.**The sum of 25 and 75 is one ______ .**5.**Two more than eleven is ______ .**6.**One less than fifteen is ______ .**7.**Nine take ______ two is seven.**8.**Ten ______ four is six.**10.**Fifty and fifty ______ 100.**14.**If you ______ three to seventeen you get twenty.