A learning/teaching approach used base-ten blocks to embody the English named-value system of number words and digit cards to embody the positional base-ten system of numeration. Steps in addition and ...

Build, read, write, and represent three-digit numbers using base-10 blocks and symbols.

To add using place value counters, put the counters into columns for hundreds, tens and ones to match the values of each number you’re adding. Let's use some place value counters to solve 438 + 5.

To add using place value counters, put the counters into columns for hundreds, tens and ones to match the values of each number you’re adding. Let's use some place value counters to solve 438 + 5.