Mental Math: Multiplication Tricks
by FlashQuest
Fast multiplication shortcuts: doubling and halving, the elevens trick, round-and-adjust, and squares ending in five.
♠ Try 3 cards right here
♥ What’s inside
- What is 25 × 4?
- 100
- What is 15 × 4?
- 60
- What is 18 × 5?
- 90
16 cards in the full deck, free in the app with spaced repetition doing the scheduling.
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Study it properly.
Free on iPhone and iPad, with scheduling that remembers exactly which cards you struggle with.
