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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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Multiplying by 125

Use the following steps to multiply mentally by 125.

• Multiply the number by 5 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:

27 Ã— 125 =

Multiply 27 by 5, and then divide by 4.

27 Ã— 5 = 135, 135 Ã· 4 = 33 (remainder 3)

Since the remainder is 3, write 75 after 33.

27 Ã— 125 = 3375

Example:

661 Ã— 125 =

Multiply 661 by 5, and then divide by 4.

661 Ã— 5 = 3305, 3305 Ã· 4 = 826 (remainder = 1)

Since the remainder is 1, write 25 after the 826.

661 Ã— 125 = 82625