Question

1. a one row of an array is drawn below. complete the array with xs to make 4 rows of 5. draw horizontal lines to separate the rows.

x x x x x

b. draw an array with xs that has 4 columns of 5. draw vertical lines to separate the columns. fill in the blanks.
____ + __ + __ + __ = ____
4 rows of 5 = ______
4 columns of 5 = ______

1. a. draw an array of xs with 3 columns of 4.

draw an array of xs with 3 rows of 4. fill in the blanks below.
____ + __ + __ = ____
3 columns of 4 = ______
3 rows of 4 = ______

Explanation:

Step1: Complete 4 rows of 5

---
X X X X X
---
X X X X X
---
X X X X X
---
X X X X X
---

Step2: Calculate 4 rows of 5

$5 + 5 + 5 + 5 = 20$

Step3: Draw 4 columns of 5

| X X X X X | X X X X X | X X X X X | X X X X X |

Step4: Calculate 4 columns of 5

$5 + 5 + 5 + 5 = 20$

Step5: Draw 3 columns of 4

| X X X X | X X X X | X X X X |

Step6: Calculate 3 columns of 4

$4 + 4 + 4 = 12$

Step7: Draw 3 rows of 4

---
X X X X
---
X X X X
---
X X X X
---

Step8: Calculate 3 rows of 4

$4 + 4 + 4 = 12$

Answer:

1. a. Completed array (4 rows of 5):

---
X X X X X
---
X X X X X
---
X X X X X
---
X X X X X
---

1. b.

$5 + 5 + 5 + 5 = 20$
4 rows of 5 = 20
4 columns of 5 = 20
Completed array (4 columns of 5):

| X X X X X | X X X X X | X X X X X | X X X X X |

1. a. Completed array (3 columns of 4):

| X X X X | X X X X | X X X X |

Completed array (3 rows of 4):

---
X X X X
---
X X X X
---
X X X X
---

$4 + 4 + 4 = 12$
3 columns of 4 = 12
3 rows of 4 = 12