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Grade 4 · Worksheet
Numbers and sequences
Square & triangular numbers
- 1.
What is the 5th square number?
- 2.
What is 6² (6 squared)?
- 3.
What is the 10th square number?
- 4.
Which of these is a square number?
- A16
- B18
- C20
- D24
- 5.
The triangular numbers are 1, 3, 6, 10, … What is the next one?
- 6.
Which of these is a triangular number?
- A10
- B12
- C14
- D16
- 7.
What is 8² (8 squared)?
- 8.
Which list contains only square numbers?
- A9, 16, 25
- B9, 10, 11
- C9, 19, 29
- D2, 4, 6
- 9.
36 is a square number.
True False - 10.
20 is a square number.
True False - 11.
What is the 1th square number?
- 12.
What is the 2th square number?
- 13.
What is the 3th square number?
- 14.
What is the 4th square number?
- 15.
What is the 6th square number?
- 16.
What is the 7th square number?
- 17.
What is the 8th square number?
- 18.
What is the 9th square number?
- 19.
What is the 11th square number?
- 20.
What is the 12th square number?
Answer key
Numbers and sequences — Square & triangular numbers
- 1.25
- 2.36
- 3.100
- 4.A. 16
- 5.15
- 6.A. 10
- 7.64
- 8.A. 9, 16, 25
- 9.True
- 10.False
- 11.1
- 12.4
- 13.9
- 14.16
- 15.36
- 16.49
- 17.64
- 18.81
- 19.121
- 20.144