Skill: Recall multiplication facts for 10

Multiplication by 10 represents equal groups of ten, so the facts $10\times 0$ through $10\times 10$ produce the multiples $0, 10, 20,\ldots,100$; each product has zero in the ones place, reflecting its place-value structure. The related forms $10\times n$ and $n\times10$ express the same product through the commutative property and support later work with place value and multi-digit multiplication, without extending to generalized rules for multiplying larger numbers by 10.