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## Numbers & Operations - The Real & Complex Number Systems 201-210

### Unit 9: Lesson 1

Decimal fractions

# Writing a number as a fraction and decimal

Sal shows the connection between decimals and fractions using a grid diagram and number lines.

## Want to join the conversation?

• any tips when my 10 yo daughter keeps writing 1/2 as 0.12 instead of 0.5? She is usually a quick learner but is struggling with simple fractions
• Well,@Adele Canny, you could teach your daughter to remember by conceiving that 1/2 means 0.5 as 2 slashes 1 and cuts it in half and thus leaving 0.5 in each side and when these two join up, they make a 1. 1/4 4 slices 1 into 4 parts and they are 0.25 and when the combine the make 1

If your daughter is a quick learner then I suggest that she should what sal khans videos again and again until she catches on.
• What if the blue dot is before 1/10 and after zero what’s the answer
• But then again 10/100 is actually equal to 1/10. This means that if Courtney said 5/100 then that would be wrong because then that would be equal to 50/1,000
• How do you make 1,999/2,000 a decimal?
• Express the location of the point on the number line was confusing. Why counting by hundredths? What video can I see to review this concept further?
• my question why do decimals end up with zero somtimes
• What is .76 as a fraction
• Why each hashmark represent a hundred?
• Each hash mark represents a hundredth (1/100) on this line, just because that's the way it is. You can figure this out because there's 10 evenly spaced hash marks from 0 to 1/10, so to get the increment of each hash mark, you divide 1/10 by 10, getting a length of 1/100 for each hash mark.
It's only 1/100 for this number line. You can make number lines with whatever scale you want to, to best help you solve the problem.
• How can I make 16/24 as a decimal
(1 vote)
• 0.66666666666... and goes on forever