Maryland Common Core Standards
MA.CC.NBT. Number and Operations in Base Ten (limited to whole numbers less than or equal to 1,000,000)
Use place value understanding and properties of operations to perform multi-digit arithmetic.
4.NBT.4. Fluently add and subtract multi-digit whole numbers using the standard algorithm.
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.