Split a bill with tip

What you'll build: the amount each person owes for a shared meal, tip included.

What you need: Nothing but this page.

Why this matters: it's the fastest way to learn multiplication, division, and order of operations — the backbone of every spreadsheet.

Step 1 — Add a tip

A 20% tip on a $80 bill is the bill times 0.20.

=80*0.20 // => 16

What just happened: * multiplies. 80 × 0.20 = 16.

Step 2 — The total with tip

=80*1.20 // => 96

What just happened: multiplying by 1.20 adds the 20% in one step.

Step 3 — Each person's share

Split the $96 total between 4 people.

=80*1.20/4 // => 24

What just happened: / divides. TrueCalc does * and / left to right.

Try changing…

• Your own bill amount, tip rate, and number of people.

You learned

• * multiplies, / divides.
• Multiplying by 1.20 adds 20% in one step.

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