Arrays and Introduction to Multiplication Quiz

Grade 2 · Math · Quiz

Show what you know about arrays and how they connect to multiplication.

Questions

What is the total for an array with 4 rows and 3 columns?
1. 7
2. 10
3. 12
4. 14
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Answer: 12
4 rows x 3 columns = 4 x 3 = 12 total objects.
Which multiplication sentence matches 5 + 5 + 5?
1. 5 x 1
2. 3 x 5
3. 5 x 5
4. 2 x 5
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Answer: 3 x 5
5 + 5 + 5 means adding 5 three times, which is 3 x 5 = 15.
A box has 2 rows of chocolates with 6 in each row. How many chocolates are there?
1. 8
2. 10
3. 12
4. 16
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Answer: 12
2 rows of 6 = 2 x 6 = 12 chocolates.
What does the 5 represent in 5 x 3?
1. The total
2. The number of columns
3. The number of rows
4. The product
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Answer: The number of rows
In 5 x 3, the 5 represents the number of rows (or groups), and 3 is the number in each row.
If 3 x 7 = 21, what is 7 x 3?
1. 10
2. 17
3. 21
4. 28
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Answer: 21
Multiplication is commutative: 3 x 7 = 7 x 3 = 21.
Which of the following is NOT an example of an array?
1. 6 eggs in 2 rows of 3
2. Chairs in 4 equal rows
3. A pile of 10 rocks
4. Windows in 3 rows of 4
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Answer: A pile of 10 rocks
A pile of rocks is not arranged in equal rows and columns, so it is not an array.
4 x 2 = 4 + 4.
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Answer: True
4 x 2 means 2 groups of 4, which is 4 + 4 = 8. True!
An array with 5 rows and 4 columns has ___ objects in total.
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Answer: 20
5 rows x 4 columns = 5 x 4 = 20 objects.