Special numbers

Name: ______________________________Date: ______________Score: ______ / 20

1.
Which of these is a square number?
1. A15
2. B16
3. C18
2.
What is the 4th square number? (4 × 4)
3.
What is the missing square number? 4, 9, __, 25
4.
Which list shows all the factors of 12?
1. A1, 2, 3, 4, 6, 12
2. B1, 2, 6, 12
3. C1, 3, 4, 12
5.
How many factors does 12 have?
6.
3 is a factor of 12.
True False
7.
5 is a factor of 12.
True False
8.
Which of these is a multiple of 5?
1. A12
2. B18
3. C20
9.
What is the 3rd multiple of 5?
10.
25 is a multiple of 5.
True False
11.
Which number is a factor of both 30 and 40?
1. A3
2. B8
3. C10
12.
Which pair of square numbers has a sum of 100?
1. A36 + 64
2. B25 + 75
3. C49 + 51
13.
Two square numbers add up to 100. Write the larger one.
14.
Is 6 an odd number or an even number?
1. Aodd
2. Beven
3. Cneither
15.
7 is an odd number.
True False
16.
Every number that has a factor of 6 must also have factors of...?
1. A2 and 3
2. B4 and 5
3. C5 and 10
17.
Every number that ends in a 4 is a multiple of 4.
True False
18.
Which number ends in 4 but is NOT a multiple of 4?
1. A14
2. B24
3. C44
19.
Pablo writes a 3-digit number. All the digits are odd and the digits add up to 7. What is the smallest number he can write?
20.
Which of these is a multiple of 6?
1. A14
2. B12
3. C20

Answer key

Special numbers