Four worksheets on expanding algebraic expressions of the form (a+b)(a-b), (a+b)^2, (a-b)^2, (a+b)^3 and (a-b)^3 using the corresponding identities. One worksheet on the identity for (a+b)(a-b), one worksheet on the identities for (a+b)^2 and (a-b)^2, one worksheet on the identities for (a+b)^3 and (a-b)^3 and one worksheet on all these identities. Solutions are included.