Find the value of each sum. Show your thinking, using drawings, numbers, or words.

1. \(238 + 52\)
2. \(252 + 38\)
3. \(119 +61\)

Find the value of each sum. Show your thinking, using drawings, numbers, or words.

1. \(495+62\)

2. \(417 + 532\)

Find the value of each sum. Show your thinking, using drawings, numbers, or words.

1. \(189+32\)

2. \(345 + 77\)

Here is how Jada found the value of \(741 + 179\).

\(741 + 9 = 750\)

\(750 + 100 = 850\)

1. Explain Jada's error.
2. Correct Jada's work. Find the value of \(741 + 179\).

1. Find the value of \(382 + 479\).

2. Find the unknown digit that makes the equation true. Explain how you know.

   \(534 + 4 \underline{\hspace{.5cm}} 6 = 1,\!000\)

Here is how Han likes to add.

1. Why does his method work? Explain your reasoning.
2. What do you think of his method?
3. Use his method. Find the value of \(388 + 259\).

Here is an equation with several unknown digits.

\(\underline{\hspace{.5cm}} \ \underline{\hspace{.5cm}}5 + 63 \underline{\hspace{.5cm}} = 823\)

1. Find the unknown digits that make the equation true.
2. Can you complete the numbers in more than 1 way to make the equation true? Explain your reasoning.