Napier’s method of multiplication is a method used to multiply large numbers when you do not have a calculator. Draw a 2 by 2 grid to multiply a 2-digit number by another 2-digit number.

convert the numbers from standard form ... convert the answer back into standard form Calculate \((4 \times 10^9) \times (7 \times 10^{-3})\). Multiply the first numbers \(4 \times 7 = 28\).