Multiplication by 75
Use the following steps to multiply mentally by 75.
 Multiply the number by 3 first, then divide that product
by 4.
 If the remainder is 0, write 00 after the quotient.
 If the remainder is 1, write 25 after the quotient.
 If the remainder is 2, write 50 after the quotient.
 If the remainder is 3, write 75 after the quotient.
Example:
32 Ã— 75 =
Multiply 32 by 3 and divide by 4.
32 Ã— 3 = 96
96 Ã· 4 = 24 (remainder = 0)
Since the remainder is 0, write 00 after 24.
32 Ã— 75 = 2400
Example:
403 Ã— 75 =
Multiply 403 by 3 and then divide by 4.
403 Ã— 3 = 1209
1209 Ã· 4 = 302 (remainder = 1)
Since the remainder is 1, write 25 after 302.
403 Ã— 75 = 30225
