Times four: double double
To multiply by 4, double the number and then double again.
Flashcard deck
The 3 and 4 times tables up to 12, with the double-double trick for the fours.
Ages 7–1024 cards
Tap a card to turn it over and see why.
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Start practisingTo multiply by 4, double the number and then double again.
Play it as a game
Print some practice