Number Pack 2

Question 1

If you minus a negative number, what are you really doing

Answer 1

Adding

Question 2

What is 7 - -3

Answer 2

10

Question 3

If you multiply two numbers that have different signs what is the sign of the answer?

Answer 3

Negative

Question 4

If you divide two numbers that have the same sign, what is the sign of the answer?

Answer 4

Positive

Question 5

What is 3 x -4

Answer 5

-12

Question 6

What is -9 ÷ -3

Answer 6

3

Question 7

What does a little 2 next to a number mean?

Answer 7

To the power of two. Multiply the number by itself

Question 8

What is 4 to the power of 2?

Answer 8

16

Question 9

What is a square root?

Answer 9

The inverse of squaring. What number do you multiply by itself to get your number?

Question 10

What is the symbol for square roots?

Answer 10

√

Question 11

What is √25

Answer 11

5

Question 12

What is a factor

Answer 12

A number you can divide an amount by with no remainder

Question 13

What factors do every number have?

Answer 13

1 and itself

Question 14

What are the factors of 20?

Answer 14

1,2,4,5,10,20

Question 15

What is a multiple?

Answer 15

The times table of that number

Question 16

What are the first 3 multiples of 20?

Answer 16

20,40,60

Question 17

What is a prime number

Answer 17

A number that has EXACTLY 2 factors: 1 and itself

Question 18

What is the first prime number

Answer 18

2. It isn’t 1 because 1 only has 1 factor.

Question 19

What is the first odd prime number

Answer 19

3 because it is prime and also not in the 2 times table