8+8+8+8

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Build an array of 4 equal addends (2.OA.C.4):

Row 1 will be a ★ entry for 8

Row 2 will be a ★ entry for 8

Row 3 will be a ★ entry for 8

Row 4 will be a ★ entry for 8

★★★★★★★★ + ★★★★★★★★ + ★★★★★★★★ + ★★★★★★★★ = 32

Add the following 4 numbers:

8 + 8 + 8 + 8

Add up the entries in blue for Column 2

Column 2 →  8 + 8 + 8 + 8 = 32

Since 32 is greater than 9, we take the digit farthest to the right of our answer which is 2

We also carry the digit farthest to the left which is 3 for Column 1

Add up the entries in blue for Column 1

We carry a value of 3 from the last step

Column 1 →  Bring down the 3 from Column 1 and we are finished

Final Answer