To quickly multiply by 5, divide the number in two and then multiply it by 10. Often this can be done quickly in your head.

Ex..25 x 5 = 125 (25/2= 12.5 12.5 x 10 = 125)

To quickly multiply by 5, divide the number in two and then multiply it by 10. Often this can be done quickly in your head.

Ex..25 x 5 = 125 (25/2= 12.5 12.5 x 10 = 125)

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