Math · Stage 5
Round a decimal with one or two places to the nearest tenth or whole number
Zoom in on the number line, find the two signposts a decimal sits between, and hop to the closer one — checking the one digit to the right and rounding up at 5.
✦ Math📘 Stage 5 · S5⏱ ~13 min🧒 Ages 9–10★ Free to start
I can round a decimal with one or two places to the nearest tenth or whole number.
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Kavi Weighs the Acorns ⚖️
Kavi's scale reads 3.47 kg of acorns 🌰! "The sign only has room for one decimal," he hoots. "Is that nearest tenth 3.4 or 3.5? And to the nearest whole kilogram, is it 3 or 4?" The trick is always the same — look one place to the right, and 5 or more rounds up ⚡.
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What your child will learn
1Hop to the closer whole signpostThe whole-number signposts are 0, 1, 2, 3, 4 … Every decimal sits between two of them. To round to the nearest whole number, hop to the closer signpost. Tap Hop +1 to travel signpost to signpost.
2Look one place to the right
3Which tenth is it closer to?
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A peek inside
Round 3.47 to the nearest tenth.
deciding digit = hundredths = 7 (5 or more) → round up
Try this at home: Round to the nearest tenth: 5.42 → __ · 5.47 → __ · 5.45 → __
Ready to play and learn?
Start the free interactive lesson, or print the handout for screen-free play.
Part of Math · Stage 5 · S5 on KAVI Academy — a secular, whole-child learning platform for ages 5–12.