Standard Alignments:

TEKS Math: 1.3.A

(A) Use concrete and pictorial models to determine the sum of a multiple of 10 and a one-digit number in problems up to 99

AU Math: ACMNA014

(Y1) Count collections to 100 by partitioning numbers using place value (ACMNA014)

CCSS Math: 1.NBT.2

1.NBT.2 Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases: