Missouri Learning Standards
MO.4.NBT. Number Sense and Operations in Base Ten
4.NBT.A. Use place value understanding and properties of operations to perform multi-digit arithmetic with numbers up to one million.
4.NBT.A.5. Demonstrate fluency with addition and subtraction of whole numbers.
4.NBT.A.6. Multiply a whole number of up to four digits by a one-digit whole number and multiply two two-digit numbers, and justify the solution.