Chart can be used to put plastic dots, bead, beans or unit cubes on and then manipulated for adding and subtracting activities. I have also used them with a dry erase marker by putting them in a plastic sleeve or laminating them.
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Fluently add, subtract, multiply, and divide multi-digit decimals using the standard algorithm for each operation.
Compare two decimals to thousandths based on meanings of the digits in each place, using >, =, and < symbols to record the results of comparisons.
Read and write decimals to thousandths using base-ten numerals, number names, and expanded form, e.g., 347.392 = 3 × 100 + 4 × 10 + 7 × 1 + 3 × (1/10) + 9 × (1/100) + 2 × (1/1000).