111.6.b.4.D
111 111.6 111.6.b 111.6.b.4 111.6.b.4.D
use strategies and algorithms, including the standard algorithm, to multiply up to a four-digit number by a one-digit number and to multiply a two-digit number by a two-digit number. Strategies may include mental math, partial products, and the commutative, associative, and distributive properties;
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