Joe
Parent
Son in the 11th grade
I am helping my son with his converting rational
numbers in the form of A/B where A and B are integers and
B not equal to zero
I think I am doing this right but I am not sure so
below are the problems and our answers are beside
them, please let me know if these answerers are correct
2. 0.18 = 9/50
4. 9 = 9/1
6. 0 = 0/1
8. -3 1/3 = -9/1
10. -2.3 = -2 3/10 = - 23/1
Are our answerers correct
Hi Joe,
Questions 2, 4 and 6 are correct.
In question 8 the number you have is negative three and a third. Ignore the negative sign for the moment and concentrate on three and a third.
I want to think about three and a third pizzas. I first cut each of the three whole pizzas into thirds. Thus I have
3 thirds and 3 thirds and 3 thirds and 1 third or 10 thirds of a pizza.
Thus
3 1/3 = 10/3
Using mathematical symbols rather than pizzas what I have done is
3 1/3 = 3 + 1/3 = 9/3 + 1/3 = 10/3
Finally, keeping the negative sign
-3 1/3 = -(3 + 1/3) = - ( 9/3 + 1/3) = -10/3
Can you do problem 10 now? this time you work in tenths rather than thirds.
Penny