Multiply Multi-Digit Whole Numbers Practice Test

A class is making $28$ snack bags. Each bag needs $45$ pretzels. The multiplication is $45\times 28$. Which claim about using the standard algorithm is incorrect (think about place value and partial products)?

A student is multiplying $31\times 52$.

They correctly compute $31\times 2=62$.

For the tens digit, they compute $31\times 5=155$ but forget that the 5 represents 5 tens.

Which option is the correct product of $31\times 52$ when place value is used correctly?