Special numbers

Name: ______________________________Date: ______________Score: ______ / 20

1.
Which of these is a square number?
1. A15
2. B16
3. C18
2.
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
3.
3 is a factor of 12.
True False
4.
What is the 3rd multiple of 5?
5.
Which number is a factor of both 30 and 40?
1. A3
2. B8
3. C10
6.
Is 6 an odd number or an even number?
1. Aodd
2. Beven
3. Cneither
7.
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
8.
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?
9.
Which of these numbers is a multiple of 4: 24, 25, 26, 27?
10.
Which of these is a square number?
1. A30
2. B36
3. C40
11.
Order these square numbers from smallest to largest.
Write the order (smallest to largest) in the boxes:
- ?25
- ?4
- ?16
- ?9
12.
Which list shows only odd numbers?
1. A2, 4, 6
2. B1, 3, 5
3. C5, 10, 15
13.
Order these multiples of 5 from smallest to largest.
Write the order (smallest to largest) in the boxes:
- ?15
- ?5
- ?25
- ?10
- ?20
14.
Write this as a single number: 90 + 4
15.
What comes next? 49, 54, 59, 64, …
16.
What comes next? 64, 65, 66, 67, …
17.
Write this as a single number: 90 + 6
18.
What comes next? 48, 58, 68, 78, …
19.
What is 9 × 9?
20.
What is the 6th square number?

Answer key

Special numbers