mathematics

which one is not a prime number?

• 2

• 9

• 23

• 29

How many operations are there in math?

• 1

• 2

• 3

• 4

9+4 =4+9 = 13 shows which property of addition?

• sum

• total

• addend

• commutative

 $What\ is\ 15\div5\times3+4$  

• 5

• 1

• 12

• 13

subtrahend + minuend = difference

• true

• false

minus, difference, take-away and subtract are other words used for:

• subtraction

• addition

• sum

• minuend

To find the ------- we add.

• difference

• sum

• addend

• minuend

To find the difference we ------

• take-away

• subtrahend

• add

• minuend

what is the next number in the sequence? 2, 3, 5, 7,......

• 8

• 9

• 10

• 11

How many prime numbers are there between 40 and 50?

• 1

• 2

• 3

• 4