CCLS - Math: 4.NBT.5

Number And Operations In Base Ten2
Use Place Value Understanding And Properties Of Operations To Perform Multi-Digit Arithmetic.
State Standard:
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.