Free, fun, and challenging. One page of diamond problems for integer operations. The second page gives examples how diamond problems,or the 'magic X' (the X inside the diamond), can be adapted to practice monomial operations differentiating the rules for exponents, combining like terms, distributive property, factoring GCF, factoring 1x^2 trinomials, and multiplying special product binomials. The factoring can be done as discovery before formally teaching it. Use as warm-ups or partner work.