﻿ Multiplication Arrays Worksheet | Problems & Solutions # Multiplication Arrays Worksheet

Multiplication Arrays Worksheet
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1.
Kim had some square cards. He arranged them as shown in the figure. Which number sentence could be used to determine the total number of square cards Kim had?  a. 4 × 3 = 12 b. 3 × 3 = 9 c. 6 × 3 = 18 d. 5 × 3 = 15

#### Solution:

The figure shows 5 rows of cards with 3 cards in each row and there are 15 cards in all.

Number of rows × Number of cards in each row = Total number of cards

5 × 3 = 15
[Substitute the values.]

So, the number sentence that could be used to determine the total number of square cards Kim had is 5 × 3 = 15.

2.
Choose the appropriate number sentence for the array shown.  a. 3 × 4 = 12 b. 4 × 4 = 16 c. 4 × 3 = 12 d. 3 × 3 = 9

#### Solution:

The array shows 3 rows with 3 triangles in each row and there are 9 triangles in all.

Number of rows × Number of triangles in each row = Total number of triangles

3 × 3 = 9
[Substitute the values.]

So, the number sentence that represents the array shown is 3 × 3 = 9.

3.
How many fish are there?  a. 4 groups of 3 = 12 b. 3 groups of 3 = 9 c. 6 groups of 3 =18 d. 8 groups of 3 = 24

#### Solution:

There are 4 groups of fish and in each group there are 3 fish.

So the total number of fish is given by 4 × 3 = 12.

4.
How many circles are there in the figure?  a. 5 × 7 = 33 b. 6 × 5 = 30 c. 6 × 4 = 24 d. 8 × 5 = 40

#### Solution:

There are 6 groups of circles and in each group there are 5 circles.

So the total number of circles is given by 6 × 5 = 30.

5.
Brian gave 3 baseball cards to each of his 5 friends. Hence the total number of baseball cards that Brian gave to his friends was 3 × 5. Which one of these repeated additions represents the same? a. 3 + 3 + 3 b. 3 + 3 + 3 + 3 + 3 c. 3 + 3 + 3 + 3 d. 5 + 5 + 5 + 5 + 5

#### Solution:

There are 5 equal groups of 3.
[To write the multiplication fact as repeated addition.]

So, 3 + 3 + 3 + 3 + 3 is the repeated addition statement for 3 × 5.

6.
The picture shows groups of stars. Which number sentence tells you how many stars are there?  a. 2 × 4 = 8 b. 3 × 3 = 9 c. 3 × 2 = 6 d. 2 × 3 = 6

#### Solution:

The picture shows 2 rows of stars with 4 stars in each row and there are 8 stars in all.

Number of rows × Number of stars in each row = Total number of stars

2 × 4 = 8
[Substitute the values.]

So, the number sentence that tells us the total number of stars in the picture is 2 × 4 = 8.

7.
The picture shows the way Carlos packed frog toys in a box. Which number sentence tells you the number of frog toys in the box?  a. 2 × 3 = 6 b. 2 × 2 = 4 c. 2 × 7 = 14 d. 2 × 6 = 12

#### Solution:

The picture shows 2 rows of frog toys with 7 toys in each row and there are 14 frog toys in all.

Number of rows × Number of frog toys in each row = Total number of frog toys

2 × 7 = 14
[Substitute the values.]

So, the number sentence that tells us the total number of frog toys in the box is 2 × 7 = 14.

8.
Which of the given number sentences matches with the picture?  a. 2 × 14 b. 2 × 12 c. 2 × 22 d. 2 × 10

#### Solution:

We observe from the figure shown that there are 2 rows of place-value blocks with each row representing 1 × 14.

So the number sentence that matches the picture is 2 × 14.

9.
Identify the array that represents the number sentence 5 × 4.  a. Figure 4 b. Figure 2 c. Figure 3 d. Figure 1

#### Solution:

5 × 4 means 5 rows with 4 objects in each row.

Among the figures, only Figure 4 has 5 rows with 4 butterflies in each row.

So, Figure 4 is the array that represents the given number sentence 5 × 4.

10.
Wilma takes 3 slices of bread in her breakfast each day. Which number sentence shows the total number of slices she would have in 4 days?  a. 3 × 1 b. 3 × 4 c. 3 × 3 d. 3 + 4

#### Solution:

Number of slices of bread that Wilma eats each day = 3.

Number of slices of bread Wilma would eat in 4 days = 3 + 3 + 3 + 3
[Add 3 repeatedly for 4 times.]

= 3 × 4
[Write the addition fact as a multiplication fact.]

So the number sentence showing the number of slices of bread Wilma would have in 4 days is 3 × 4.