Test: Square Numbers - Year 6 MCQ

The square of 8 is calculated as follows:

• Multiply 8 by itself:
• 8 * 8 = 64

Therefore, the square of 8 is 64.

36 is a perfect square because:

• The square root of 36 is 6.
• It can be expressed as 6 x 6.

Therefore, 36 is indeed a perfect square.

The square root of 49 is:

• √49 equals 7.

The smallest prime number is 2.

To find the square of this number:

• Square of 2 is calculated as 2 multiplied by 2.
• This equals 4.

Therefore, the square of the smallest prime number is 4.

• A square number is a number that can be expressed as the product of an integer with itself.
• A prime number is a number greater than 1 that has no divisors other than 1 and itself.
• The only number that is both a square and a prime is 2. However, 2 squared is 4, which is not prime.
• Thus, there is no number that is both a square number and a prime number.

The next square number after 49 is 64.

The calculation is as follows:

• The square root of 49 is 7, as 7² equals 49.
• The next integer after 7 is 8.
• Calculating 8² gives us 64.

Thus, the next square number is 64.

The square numbers between 1 and 25 are 1, 4, 9, 16, and 25. So, there are 5 square numbers.

The square root of 144 is:

• The square root operation finds a number that, when multiplied by itself, gives the original number.
• For 144, the calculation is:
• √144 = 12
• Thus, the square root of 144 is 12.

27 is not a square number because √27 is not an integer.

The square numbers ending in 4 have a last digit of either 2 or 8, depending on whether the square root is even or odd.
So, option (B) is correct