Jenn and David shared a candy bar. Jenn ate three tenths. David ate four tenths. How much is left?
Jenn and David ate a total of 3/10 + 4/10 = <<3/10+4/10=7/10>>7/10 of the candy bar.
So, 1 - 7/10 = <<1-7/10=3/10>>3/10 of the candy bar is left. Answer: \boxed{\dfrac{3}{10}}.
three tens and six ones
Three tens is equal to 30, and six ones is equal to 6. Therefore, three tens and six ones is equal to 30 + 6 = <<30+6=36>>36. Answer: \boxed{36}.
To find out how much candy is left, we need to subtract the amount Jenn and David ate from the total candy bar.
1. Start with the total candy bar: 1 whole bar
2. Jenn ate three tenths, which is 3/10 of the candy bar.
3. Subtract Jenn's portion: 1 - 3/10 = 10/10 - 3/10 = 7/10
4. David ate four tenths, which is 4/10 of the candy bar.
5. Subtract David's portion: 7/10 - 4/10 = 3/10
So, there is 3/10 of the candy bar left.