Question

name
get out the square tiles below, and construct the following arrays with the tiles in each. on the line, write a repeated addition equation to match each construction on the line.
1 a. construct a rectangle with
2 rows of 4 tiles
b. construct a rectangle with
2 columns of 4 tiles

1. a. construct a rectangle with

3 rows of 2 tiles
b. construct a rectangle with
3 columns of 2 tiles

1. a. construct a rectangle

using 8 tiles
b. construct a rectangle
using 12 tiles

Explanation:

Step1: Define repeated addition for 1a

2 rows of 4 tiles means add 4 twice.
$4 + 4$

Step2: Define repeated addition for 1b

2 columns of 4 tiles means add 2 four times.
$2 + 2 + 2 + 2$

Step3: Define repeated addition for 2a

3 rows of 2 tiles means add 2 three times.
$2 + 2 + 2$

Step4: Define repeated addition for 2b

3 columns of 2 tiles means add 3 twice.
$3 + 3$

Step5: Define repeated addition for 3a (6 tiles)

One way: 3 rows of 2 tiles, add 2 three times.
$2 + 2 + 2$

Step6: Define repeated addition for 3b (12 tiles)

One way: 4 rows of 3 tiles, add 3 four times.
$3 + 3 + 3 + 3$

Answer:

1a. Repeated addition: $4 + 4$
1b. Repeated addition: $2 + 2 + 2 + 2$
2a. Repeated addition: $2 + 2 + 2$
2b. Repeated addition: $3 + 3$
3a. Repeated addition (example): $2 + 2 + 2$
3b. Repeated addition (example): $3 + 3 + 3 + 3$

(Note: For the tile constructions, 1a is a 2x4 grid, 1b is a 4x2 grid, 2a is a 3x2 grid, 2b is a 2x3 grid, 3a is a 2x3 or 3x2 grid, 3b is a 3x4, 4x3, 2x6, or 6x2 grid.)