PercentPro

Master rapid percentage estimations using three simple building blocks.

The Building Blocks

10% ÷ 10

Move decimal left 1 place.

10% of $48 → $4.80

50% ÷ 2

Simply cut the number in half.

50% of $48 → $24.00

1% ÷ 100

Move decimal left 2 places.

1% of $48 → $0.48

Score: 0 / 0
Restaurant Tip Mode: Restaurant Tips

Restaurant Bill: $48.00

Calculate a 15% tip

$

Please enter a valid number before submitting.

Correct!

You entered: $7.20

Exact Solution: $7.20

Mental Math Breakdown

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