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Number Properties
Learn your types of number e.g factor, odd, cube
| Question | Answer |
|---|---|
| What are the first 5 prime numbers? | 2, 3, 5, 7, 11 |
| Is 25 a square number? Why/Why not? | Yes. 5 times itself (5 squared) is 25. |
| Give 3 multiples of 20 | 20, 40, 60, 80, 100, 120.... any number in the 20 times table |
| What is the 2nd cube number? | 8. 2 x 2 x 2 (2 cubed) |
| Is 29 odd or even? Why? | 29 is odd. It is not in the 2 x table. |
| Here is a sequence: 4, 10, 16, 22, 28,... Will 75 be in this sequence? Explain. | No. The sequence has only even numbers. 75 is an odd number. |
| What is the square root of 36? | 6. Because 6 squared (6 x 6) is 36 |
| Is 15 a factor of 5? | No. 15 does not go into 5. 15 is a multiple of 5. 5 is a factor of 15. |
| What is the sum of 5 and 7? | 12. Sum means add. |
| What is the product of 5 and 7? | 35. Product means times |
| What is the difference of 5 and 7? | 2. Difference means takeaway |
| Find 3 multiples of 9. | 9, 18, 27, 36, .... Any number in the 9 times table. |
| Find 2 even factors of 30 | 2, 6, 10, and 30 are all possible answers. They are in the 2 x table (even) and go into 30 (factors) |
| Is 27 a cube number? | Yes. 3 cubed (3 x 3 x 3) is 27. |
| Is 100 a square number? | Yes. 10 squared (10 x 10) is 100. |
| What's the cube root of 64? | 4 4 cubed (4 x 4 x 4) is 64 |
| What's the square root of 81 | 9. 9 x 9 (9 squared) is 81 |
| What is 2 squared? | 4 2 x 2 |
| What is 7 squared? | 49 7 x 7 |
| What is the 5th multiple of 4? | 20. 4 x 5 |
| What is 2 cubed? | 8 2 x 2 x 2 |
| What is 5 cubed? | 125 5 x 5 x 5 |
| What is 1 cubed? | 1 1 x 1 x 1 |
| What is 4 squared? | 16 4 x 4 |
| Is 32 a prime number? | No. 32 has more than 2 factors (e.g. 1 x 32, but also 8 x 4 and 16 x 2) |
| Here is a sequence: 5, 15, 25, 35, Will 94 be in this sequence? Explain. | No. 94 is not a multiple of 5. |
| Is 17 a prime number? | Yes. 17 only has 2 factors (itself and 1) |
| Is 19 a prime number? | Yes. 19 only has 2 factors (itself and 1) |
| Is 33 a prime number? | No. 33 has more than 2 factors (e.g. 1 x 33, but also 3 x 11) |
| Is 95 an even number? | No. 95 is not in the 2 x table |
| Is 3 a factor of 60? | Yes. 3 x 20 = 60 |
| Is 124 a multiple of 5? | No. It is not in the 5 times table. All multiples of 5 end in a 5 or 0. |
Created by:
ethompson01
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