Learn Year 4 decimals: tenths, hundredths, rounding and comparing. Chop a chocolate slab, roll cars down Rounding Hill and pay in the factory shop.
Year 4 maths · 1 Year 4 maths · 2
Year 4 maths · 1 Year 4 maths · 2
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What the chapters cover in the national curriculum in England:
Year 4 Decimals is an interactive maths game that teaches children aged 8 to 10 what tenths and hundredths are and how to use them as decimals, matching the Year 4 national curriculum in England. Dot, a friendly robot, reads every line aloud with captions.
Children cut a 100-square chocolate slab to see that one whole divided by 100 makes hundredths, and that a tenth divided by 10 does too. They count across tricky spots such as 0.09 to 0.10, watch digits slide along a place value chart while the decimal point stays still, roll cars over a hill to round to the nearest whole number, and balance parcels to compare decimals.
Answers are typed on a keypad as well as chosen from options, and gentle hints target common slips, such as writing 5p as £0.5 instead of £0.05.
A decimal is a way of writing parts of a whole using a decimal point. The first digit after the point shows tenths and the second shows hundredths, so 0.4 means four tenths and 0.07 means seven hundredths.
After 0.09 comes 0.10, which is the same as 0.1. Nine hundredths plus one more hundredth makes ten hundredths, and ten hundredths make one tenth. A common mistake is to write 0.010, which is actually a much smaller number.
Look at the tenths digit, the first digit after the decimal point. If it is 5 or more, round up; if it is 4 or less, round down. So 3.2 rounds to 3, while 3.5 and 3.7 both round to 4.
The game is for children aged 8 to 10 and matches the Year 4 maths curriculum in England, where tenths and hundredths are taught. Every line is read aloud with captions, so it also suits Year 5 children who want a refresher.
It has seven chapters, each with an animated introduction, hands-on activities and a three-question check, plus two optional warm-ups and a 10-question Grand Challenge. Playing everything takes about an hour, and children can pick any chapter from the map.
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