MULTIPLY BY 5, 25 & 50

Use clever shortcuts to multiply by 5, 25, and 50 in your head.

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CS.N.4.4·Using multiplication properties to simplify calculations(IV)

Section 1 / 3

MULTIPLYING BY 5

Five is half of ten, so multiply by 10 and then halve. For 14 x 5, do 14 x 10 = 140, and half of that is 70. Doubling and halving beats counting in fives.

24 × 5

1Trick: halve, then × 10

2Half of 24 = 12

312 × 10 = 120

= 120

LEADER TIP

Show the connection: ×5 = ×10 ÷2, ×25 = ×100 ÷4. Students love discovering these patterns.

BEFORE THIS LESSON, TRY

Double & Half Shortcuts

Times Tables Mastery

PRACTICE WITH THESE GAMES

Multiplication Quiz

Double & Halve

Math Sprint

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MULTIPLY BY 5, 25 & 50

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MULTIPLY BY 5, 25 & 50