Mon Prof Augmenté
Fifteen hundredths on a grid and a line
Age 10 · Maths
Open to everyone until Monday, November 16
To keep it, print it while it is open.
Cut 1 into 10 equal parts and you get tenths, into 100 parts hundredths, and into 1000 parts thousandths. Fifteen hundredths, 15/100, is written 0.15: one tenth and five hundredths.
In the picture
- A full shaded column: 10 hundredths, the same as 1 tenth (0.1)
- Five more shaded squares: 5 hundredths (0.05)
- The dot on the enlarged number line: 15/100 = 0.15
Examples
- 0.15 € is 15 cents, which is 15 hundredths of one euro.
- On a metre stick, 15 cm is 15 hundredths of a metre, so 15 cm = 0.15 m.
Key takeaways
- After the decimal point, the 1st digit counts tenths, the 2nd hundredths and the 3rd thousandths.
- 15/100 = 0.15, but 15/1000 = 0.015.
Quiz: Fifteen hundredths on a grid and a line (Age 10)
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How do you write fifteen hundredths (15/100) as a decimal number?
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In a decimal number, what does the 3rd digit after the decimal point count?
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Ten hundredths are the same as which amount?
The answers, each with its explanation, are in the app. This quiz is free there while the lesson is in the free week.
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