Subtracting 2-digit numbers using base 10 blocks, 100 grids, 100 charts, number lines, expanded form, mental math strategies, and more. Bundle of Print task cards and Google slides. Subtracting 2 and 3-digit numbers in grades 2 and 3 takes time for many students to master, especially when regrouping is required. Establishing a good understanding of place value is necessary before moving on to operations. Base 10 blocks are great for understanding place value and for simulating subtraction. Repre