Math · Stage 6

Fast convert between fractions, decimals and percentages (speed drill)

Half, 0.5 and 50% are the same amount wearing different clothes. Lock the handful of everyday equivalents into memory, then flip any number between a fraction, a decimal and a percentage in seconds using just two moves — ×100 and ÷100.

✦ Math📘 Stage 6 · S6⏱ ~12 min🧒 Ages 10–12★ Free to start

I can fast convert between fractions, decimals and percentages (speed drill).

Start the free lesson →⬇ Printable PDF

📖

Kavi's Lightning Deal ⚡

At the night market three signs shout the same bargain: one says ½ off, one says 0.5 off, and one says 50% off. A customer frowns, unsure which is best. "They are exactly the same deal!" Kavi hoots. "A fraction, a decimal and a percentage can all name one amount — the trick is to flip between them fast."

🎓

What your child will learn

1The same amount, said three waysThree of the ten parts are shaded. That one amount has three names: 3/10 as a fraction, 0.3 as a decimal, and 30% as a percentage. Per-cent just means out of 100 — so 3/10 = 30/100 = 30%. Tap the cells to build your own fraction and say its three names.

2Know these by heartA speed drill rewards recall, not working-out. Burn in this short table of the everyday equivalents and most conversions become instant. Tap a row to hear it.

3Flip any number: ×100 and ÷100When it is not in the table, use the engine. Only two moves flip between decimal and percent, and dividing turns any fraction into a decimal. Tap a row to see the move.

4To compare, make them matchYou cannot compare a fraction with a decimal with a percentage while they look different. Turn them all into one form — percent is usually easiest — then it is just 'which number is bigger?' Tap a row.

🔍

A peek inside

Convert 3/4 to a decimal and a percentage — fast.

Divide to get the decimal: 3 ÷ 4 = 0.75. Then × 100 for the percent: 0.75 → 75%.

Try this at home: Percentages of the common fractions: 1/2 = __% · 1/4 = __% · 3/4 = __% · 1/5 = __%

Ready to play and learn?

Start the free interactive lesson, or print the handout for screen-free play.

Start the free lesson →⬇ Download PDF

Part of Math · Stage 6 · S6 on KAVI Academy — a secular, whole-child learning platform for ages 5–12.