Grades 3, 4 and 5 | Math | Elementary School | Multiplication Using Arrays

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Math: Elementary School: Grades 3, 4 and 5 Quiz - Multiplication Using Arrays (Questions)

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Multiplication using arrays is a way of organizing the numbers in a visual way in order to understand how repeated addition is the same as multiplication. Using an array to visualize a problem also highlights how the order of the multiplication can be reversed to give the same answer. For example, 2 x 4 gives the same answer as 4 x 2.

Can you do multiplication?

[ ]	2 + 2
[ ]	4 x 2
[ ]	4 + 4 + 4
[ ]	2 x 2

[ ]	2 + 5
[ ]	4 x 5
[ ]	5 + 5
[ ]	5 x 5

[ ]	2 + 2 + 2 + 2 + 2
[ ]	4 x 5
[ ]	5 + 5 + 5 + 5 + 5
[ ]	5 x 5

[ ]	3 + 3 + 3 + 3 + 3 + 3
[ ]	6 + 6 + 6 + 6 + 6 + 6
[ ]	3 x 3
[ ]	6 x 6

[ ]	3 + 3 + 3
[ ]	6 + 6 + 6
[ ]	3 x 3
[ ]	6 x 6

[ ]	18
[ ]	12
[ ]	8
[ ]	14

[ ]	6
[ ]	8
[ ]	4
[ ]	3

[ ]	30
[ ]	13
[ ]	26
[ ]	15

[ ]	18
[ ]	9
[ ]	99
[ ]	81

10.

[ ]	72
[ ]	12
[ ]	27
[ ]	14

Math: Elementary School: Grades 3, 4 and 5 Quiz - Multiplication Using Arrays (Answers)

[ ]	2 + 2
[x]	4 x 2
[ ]	4 + 4 + 4
[ ]	2 x 2

2 groups of 4 is the same as 4 groups of 2

[ ]	2 + 5
[ ]	4 x 5
[x]	5 + 5
[ ]	5 x 5

2 x 5 is 2 groups of 5, or 5 + 5

[x]	2 + 2 + 2 + 2 + 2
[ ]	4 x 5
[ ]	5 + 5 + 5 + 5 + 5
[ ]	5 x 5

5 x 2 is 5 groups of 2, or 2 + 2 + 2 + 2 + 2

[x]	3 + 3 + 3 + 3 + 3 + 3
[ ]	6 + 6 + 6 + 6 + 6 + 6
[ ]	3 x 3
[ ]	6 x 6

6 x 3 is the same as 6 groups of 3, or 3 + 3 + 3 + 3 + 3 + 3

[ ]	3 + 3 + 3
[x]	6 + 6 + 6
[ ]	3 x 3
[ ]	6 x 6

3 x 6 is the same as 3 groups of 6, or 6 + 6 + 6

[ ]	18
[x]	12
[ ]	8
[ ]	14

3 groups of 4, or 4 + 4 + 4 = 12

[x]	6
[ ]	8
[ ]	4
[ ]	3

2 groups of 3, or 3 + 3 = 6

[ ]	30
[ ]	13
[ ]	26
[x]	15

5 groups of 3, or 3 + 3 + 3 + 3 + 3 = 15

[x]	18
[ ]	9
[ ]	99
[ ]	81

3 x 3 = 9. 9 plus 9 = 18

10.

[ ]	72
[ ]	12
[ ]	27
[x]	14

2 groups of 7, or 7 groups of 2, makes 14