lesson plan rubric NY-4.NBT.4 Number and Operations in Base Ten Fluently add and subtract multi-digit whole numbers using a standard algorithm. NY-4.NBT.5 Multiply a whole number of up to four digits by a one-digit whole number, and multiply two two-digit numbers, using strategies based on place value and the properties of operations. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models