Worked example
An array has 2 equal rows of 3 dots. How many dots are there altogether?
Answer & why
Answer: 6
Add one count for each row: 3 + 3 = 6.
Grade 2 · Math
Count arrays with repeated addition
Use equal rows to connect an array with repeated addition.
6 authored questions + worked example
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All questions
All 6 authored questions for this skill.
Question 1
An array has 4 equal rows of 5 dots. How many dots are there altogether?
- 19
- 21
- 22
- 20
A hint
Count the same number in every row, then add the row counts.
Answer & why
Answer: 20
Add one count for each row: 5 + 5 + 5 + 5 = 20.
Question 2
An array has 2 equal rows of 5 dots. How many dots are there altogether?
- 10
- 11
- 9
- 12
A hint
Count the same number in every row, then add the row counts.
Answer & why
Answer: 10
Add one count for each row: 5 + 5 = 10.
Question 3
An array has 3 equal rows of 3 dots. How many dots are there altogether?
- 11
- 9
- 10
- 8
A hint
Count the same number in every row, then add the row counts.
Answer & why
Answer: 9
Add one count for each row: 3 + 3 + 3 = 9.
Question 4
An array has 5 equal rows of 3 dots. How many dots are there altogether?
- 14
- 17
- 15
- 16
A hint
Count the same number in every row, then add the row counts.
Answer & why
Answer: 15
Add one count for each row: 3 + 3 + 3 + 3 + 3 = 15.
Question 5
An array has 2 equal rows of 3 dots. How many dots are there altogether?
- 7
- 6
- 8
- 5
A hint
Count the same number in every row, then add the row counts.
Answer & why
Answer: 6
Add one count for each row: 3 + 3 = 6.
Question 6
An array has 3 equal rows of 4 dots. How many dots are there altogether?
- 14
- 12
- 11
- 13
A hint
Count the same number in every row, then add the row counts.
Answer & why
Answer: 12
Add one count for each row: 4 + 4 + 4 = 12.