For the first two problems, circle the vertical calculation where digits of the same kind are lined up. Then, finish the calculation and find the sum. For the last two problems, find the sum using vertical calculation.

1. \(3.25+1\)

   

   First calculation, 3 point 2 5 plus 1 point 0, the decimal point for 1 point 0 is shifted one place to the right.

   

   Second calculation, 3 point 2 5 plus 1 point 0, the decimal points are aligned.

   

   Third calculation, 3 point 2 5 plus 1, the 1 is shifted two places to the right. 

2. \(0.5+1.15\)

   

   First calculation, 0 point 5 plus 1 point 1 5, decimal points are aligned.

   

   Second calculation, 0 point 5 plus 1 point 1 5, decimal point of 1 point 1 5 shifted one place to the left.

   

   Third calculation, 0 point 5 0 plus 1 point 1 5 0, decimal point of 1 point 1 5 0 shifted one place to the left.

3. \(10.6+ 1.7\)

4. \(123+0.2\)

Here is a base-ten diagram that represents 1.13. Use the diagram to find \(1.13 - 0.46\). Explain or show your reasoning.

Complete the calculations so that each shows the correct difference.

Problem a. 14 and 6 tenths - 1 and 4 tenths = blank blank blank point 2.

Problem b. 38 and 60 hundredths - 6 and 75 hundredths = blank blank point blank 5.

Problem c. 241 and 76 hundredths -  2 and 18 hundredths = blank blank blank point blank 8.

A rectangular prism measures \(7\frac{1}{2}\) cm by 12 cm by \(15\frac{1}{2}\) cm.

1. Calculate the number of cubes with edge length \(\frac{1}{2}\) cm that fit in this prism.
2. What is the volume of the prism in \(\text{cm}^3\)? Show your reasoning. If you are stuck, think about how many cubes with \(\frac12\)-cm edge lengths fit into \(1\text{ cm}^3\).