Multiplication by 50

Use the following steps to multiply mentally by 50.

• Divide the number by 2.

• If the remainder is 0, write 00 after the quotient.

• If the remainder is 1, write 50 after the quotient.

Example:

74 × 50 =

Divide 74 by 2. 74 ÷ 2 = 37. (remainder = 0)

Since the remainder is 0, write 00 after 37.

74 × 50 = 3700.

Example:

147 × 50 =

Divide 147 by 2. 147 ÷ 2 = 73 (remainder = 1)

Since the remainder is 1, write 50 after 73.

147 × 50 = 7350.