Rounding means finding a close, tidy number that is easier to say and use.
Imagine your class has 38 students. You might say:
"about 40"
40 is the nearest tidy ten — it's easy to remember and good enough for a quick answer.
In this Spark you'll round to the nearest 10, 100, and 1000. Tap Next to begin! 👉
Every number sits between two tens. Round to whichever ten is nearer.
Where should 73 round to? Tap the closer ten.
Tip: count the gaps — 73 is only 3 away from 70, but 7 away from 80.
You don't always need a number line. Just look at one digit — the one to the right of where you're rounding.
👉 5, 6, 7, 8, 9 → round UP ⬆️
👉 0, 1, 2, 3, 4 → stay DOWN (keep the same) ⬇️
Let's round 246 to the nearest ten. The decider is the pink digit. Tap it!
Look at the ones digit (the last one). Is it 5 or more? Then round up!
Round to the nearest 10
Now we cover up the last two digits and look at the tens digit to decide.
Round 352 to the nearest hundred:
Round to the nearest 100
Same idea, bigger number! For the nearest thousand, the decider is the hundreds digit.
Round 4621. Tap the hundreds digit to reveal the decision.
Round to the nearest 1000
You're now a rounding champion! Here's the whole trick in one box:
1️⃣ Decide what to round to (10, 100 or 1000).
2️⃣ Look at the next digit to the right — the decider.
3️⃣ 5 or more → round up. 4 or less → stay the same.
4️⃣ Turn the digits after it into zeros. ✅
Quick recap:
Keep practising and you'll round in your head super fast! 🌟