 1. Word cloud
120 seconds
What words can you use to describe a decimal to the thousandths?
2. Slide
60 seconds
Writing Decimal Numbers to the Thousandths
A decimal number is any number written with a decimal point. To write a number to the thousandths, count the number of digits to the right of the decimal point. Then write the name of the number, followed by 'thousandths'.
3. Slide
60 seconds
Did you know?
The number name for a decimal to the thousandths is called a thousandth. The symbol for this is 0.001. A thousandth is one thousandth of a unit. It is written in scientific notation as 1 x 10-3. A thousandth is often expressed as a fraction with a denominator of 1000 or 10^3. This is the same as 1/1000 or 0.001.
4. Open question
180 seconds
Work together in pairs: What is the name for the decimal 0.567?
5. Personalised Feedback
360 seconds
How would you write the number name for the decimal 0.345 to the thousandths place?
6. Open question
180 seconds
Work together in pairs: What is the number name for 0.867?
7. Word cloud
120 seconds
What decimal place comes after hundredths?
8. Slide
60 seconds
Writing Number Names for Decimals
Tenths: To write the number name of a decimal to the tenths, use the number before the decimal point and add the word 'tenths'. Hundredths: To write the number name of a decimal to the hundredths, use the number before the decimal point and add the word 'hundredths'. Thousandths: To write the number name of a decimal to the thousandths, use the number before the decimal point and add the word 'thousandths'.
9. Slide
60 seconds
Writing Number Names for Decimals
Tenths: To write the number name of a decimal to the tenths, use the number before the decimal point and add the word 'tenths'. Hundredths: To write the number name of a decimal to the hundredths, use the number before the decimal point and add the word 'hundredths'. Thousandths: To write the number name of a decimal to the thousandths, use the number before the decimal point and add the word 'thousandths'.
10. Slide
60 seconds
Did you know?
The name of the number 0.123 is read as 'zero point one two three' The name of the number 0.002 is read as 'zero point zero zero two' The name of the number 0.004 is read as 'zero point zero zero four'
11. Open question
180 seconds
Work together in pairs: What is the number name for 0.567?
12. Open question
180 seconds
Work together in pairs: What is the number name for 0.356?
13. Drawings
450 seconds
Brain break: Draw a flying peanut with a lightning bolt tail!
14. Poll
60 seconds
How do you write the number 0.3 in words?
• Zero point three
• Thirty
• Three point zero
• Three
15. Poll
60 seconds
What is the word form of the number 0.75?
• Seventy-five
• Seven and a half
• Seventy-five hundredths
• Seven point five
16. Poll
60 seconds
How do you write the number 0.125 in words?
• One and twenty-five hundredths
• One hundred twenty five thousandths
• One hundred two five
• Twelve and a half tenths
17. Poll
60 seconds
What is the word form of 0.009?
• Nine thousandths
• Ninety-nine thousandths
• Nine tenths
• Nine hundred
18. Poll
60 seconds
Write the number 0.025 in words.
• Twenty-five thousandths
• Two and a half
• Zero point zero twenty-five
• Two hundred fifty
19. Poll
60 seconds
What is the word form of the number 0.75?
• Seventy-five
• Seven and a half
• Seventy-five hundredths
• Seven point five
20. Word cloud
120 seconds
What is the word for one-hundredth?
21. Slide
60 seconds
Writing Decimals in Word Form
To write decimals to the tenths, write the number before the decimal point and the decimal point itself, followed by the word 'tenths'. To write decimals to the hundredths, write the number before the decimal point, the decimal point, and the first number after the decimal point, followed by the word 'hundredths'. To write decimals to the thousandths, write the number before the decimal point, the decimal point, and the two numbers after the decimal point, followed by the word 'thousandths'.
22. Slide
60 seconds
Did you know?
The Greek mathematician Hippasus is credited with discovering the existence of irrational numbers, which includes decimals. The decimal point (or 'radix point') was first used by the Chinese mathematician Zhu Shijie in 1299. When writing decimals in word form, the words 'and' and 'point' are used to separate the whole from decimal numbers (e.g. Two and three tenths).
23. Open question
180 seconds
Work together in pairs: Exit Ticket Question: Write the decimal 0.271 in word form.
24. Personalised Feedback
360 seconds
If you have the decimal number 0.375, how would you write it in word form using tenths, hundredths, and thousandths?
25. Open question
180 seconds
Work together in pairs: What is the word form of 0.527?
26. Personalised Feedback
360 seconds
If you have the decimal number 0.375, how would you write it in word form using tenths, hundredths, and thousandths?
27. Poll
60 seconds
Write the decimal 0.3 in word form.
• Three thousandths
• Thirty thousandths
• Three tenths
• Three hundredths
28. Poll
60 seconds
Write the decimal 0.45 in word form.
• Four and five tenths
• Forty-five hundredths
• Four and five thousandths
• Forty and five hundredths
29. Poll
60 seconds
Write the decimal 0.007 in word form.
• Seven tenths
• Seven millionths
• Seven thousandths
• Seventy hundredths
30. Open question
180 seconds
Work together in pairs: Exit Ticket Question: Write the decimal 0.271 in word form.