Question

(three hundreds, twelve tens, four ones)

The models show a total of 3 wholes, __
tenths, and __
hundredths. After regrouping 10 tenths into 1 whole, there are __
wholes, __
tenths, and __
hundredths. Therefore, the sum of the numbers is
__

Answer 1

The models show a total of 3 wholes, 4 tenths, and 1 hundredth. After regrouping 10 tenths into 1 whole, there are 4 wholes, 1 tenth, and 1 hundredth. Therefore, the sum of the numbers is 3.41.

To find the sum of 2.3 + 1.94, you can use a place value model to visualize the addition. Let's fill in the blanks step by step:

1. Initial Sum:

`\[ \begin{array}{c} \phantom{0}\text{.}\phantom{0}2\phantom{0}3 \\ + \phantom{0}\text{.}\phantom{0}1\phantom{0}9\phantom{0}4 \\ \underline{\phantom{0000000}} \\ \end{array} \]`

2. Sum of Hundredths:

`\[ \begin{array}{c} \phantom{0}\text{.}\phantom{0}2\phantom{0}3 \\ + \phantom{0}\text{.}\phantom{0}1\phantom{0}9\phantom{0}4 \\ \underline{\phantom{0}\text{.}\phantom{0}4\phantom{0}1} \\ \end{array} \]`

3. Regrouping 10 Tenths to 1 Whole:

`\[ \begin{array}{c} \phantom{0}\text{.}\phantom{0}2\phantom{0}3 \\ + \phantom{0}\text{.}\phantom{0}1\phantom{0}9\phantom{0}4 \\ \underline{\phantom{0}\text{.}\phantom{0}4\phantom{0}1} \\ \phantom{0}3\phantom{0}\text{.}\phantom{0}4\phantom{0}1 \\ \end{array} \]`

Therefore:

- The models show a total of 3 wholes, 4 tenths, and 1 hundredth.

- After regrouping 10 tenths into 1 whole, there are 4 wholes, 1 tenth, and 1 hundredth.

Therefore, the sum of the numbers is 3.41.

The probable question may be:

How can these models be used to find the sum 2.3 + 1.94?Enter your answers in the boxes.The models show a total of 3 wholes, _ tenths, and _ hundredths. After regrouping 10 tenths into 1 whole, there are _ wholes, _ tenths, and tenths _ _/_​ hundredths. Therefore, the sum of the numbers is. Can someone please help me fill in these blanks.