Prime Numbers
This is the only even prime number in existence.
2
This tool, which resembles a tree with branches, is commonly used to break a composite number down into its prime parts.
a factor tree
In the expression 5 to the 3rd power, the number 3 is called the exponent, and the number 5 is called this.
The Base
The total product when you multiply 15 by 5.
75
When using the standard multiplication algorithm to multiply by a two-digit number, you must always put this symbol in the ones place of the second row before you begin multiplying by the tens digit.
zero
This is the smallest two-digit prime number.
11
he prime factorisation of 12, written out completely without exponents.
2x2x3
The value of 10 squared (102)
Show your working out.
100
The total product when you multiply 42 by 3.
126
The final product of 11 multiplied by 15.
What is 165?
These are the four prime numbers that fall between 1 and 10.
2,3,5 and 7
This is the prime factorisation of the number 30.
2x3x5
The value of 2 cubed (23)
Show your working out
8
The answer when 125 is multiplied by 4.
500
The final product when you multiply 24 by 20.
480
This number is neither prime nor composite because it only has one factor (itself).
1
This number has the prime factorisation of 2x3 x3x5.
90
This is how you write out 4 to the power of 5 as a repeated multiplication string before solving it.
4x4x4x4x4
If you multiply 608 by 7, the final product is this.
4256
The value of 45 multiplied by 12.
540
How many factors do Prime numbers have and what are they?
2 factors one and itself
Written with an exponent, the prime factorisation of 20 is 2 squared times this number.
5
Any non-zero number raised to the power of 0 will always equal this value.
1
A box holds 9 packs of pencils, and each pack has 235 pencils inside. This is the total number of pencils in the box.
2115
The answer when you multiply 73 by 56.
4088