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 Depdendent Variable

 Number of equations to solve: 23456789
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 Dependent Variable

 Number of inequalities to solve: 23456789
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# 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