3rd grade math Help!
- Thread starter motherof4
- Start date
Hello, motherof4!
Third-grade level?
It takes a bit of reasoning ... quite a bit for an 8-year old.
To get the least sum, we'd assume we'll use the four smallest digits: 0, 1, 2, 3.
Then list all the pairs of two 2-digit numbers that can be made.
(And we assume that a number may not begin with zero.)
. . \(\displaystyle \begin{array}{cc}\text{Numbers} & \text{Sum} \\ \hline 10,\,23 & 33\\ 10,\,32 & 42 \\ 20,\,13 & 33 \\ 20,\,31 & 51 \\ 30,\,12 & 42 \\ 30,\,21 & 51 \end{array}\)
The least sum is 33.
Third-grade level?
It takes a bit of reasoning ... quite a bit for an 8-year old.
To get the least sum, we'd assume we'll use the four smallest digits: 0, 1, 2, 3.
Then list all the pairs of two 2-digit numbers that can be made.
(And we assume that a number may not begin with zero.)
. . \(\displaystyle \begin{array}{cc}\text{Numbers} & \text{Sum} \\ \hline 10,\,23 & 33\\ 10,\,32 & 42 \\ 20,\,13 & 33 \\ 20,\,31 & 51 \\ 30,\,12 & 42 \\ 30,\,21 & 51 \end{array}\)
The least sum is 33.
