Practice Test 3

A student is multiplying $439 \times 18$ using the standard algorithm. They correctly find $439 \times 8 = 3{,}512$. Which second partial product is correct, showing that the 1 in 18 represents 1 ten because of place value?

A student is multiplying $58 \times 34$ using the standard algorithm. The student lines up the digits by place value and gets a first partial product of $58 \times 4 = 232$. What should the second partial product represent, based on place value of the tens digit in 34?