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# Xtra Maths: Autumn Term !

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Here!
Ok, Square roots!
A square root is the opposite of squaring a number.
Square
3
Square
Root
9
Three squared is nine, so the square root of nine is three!
п‚› A square root of a number is ...
... a value that can be multiplied by itself to give the
original number!
п‚› A square root of 9 is ...
... 3, because when 3 is multiplied by itself you get 9!
Number
Squared
1
1
2
4
3
9
4
16
5
25
6
36
7
49
8
64
9
81
10
100
Number
Squared
11
121
12
144
13
169
14
196
15
225
16
256
17
289
18
324
19
361
20
400
Cube Roots!
A cube root goes the other direction of having something
cubed
3 cubed is 27, so the cube root of 27 is 3!
cube
3
cube
root
п‚› The cube root of a number is ...
... a special value that when cubed gives the original
number!
п‚› The cube root of 27 is вЂ¦
... 3, because when 3 is cubed you get 27!
27
Number
Cubed
1
3
2
8
3
27
4
64
5
125
6
216
7
343
8
512
9
729
10
1000
Copy and Complete the Square and Cube Root sums!
Good luck!
Square
Cube
1. в€љ9 = ?
1. в€љ27 = ?
2. в€љ225 = ?
2. в€љ216 = ?
3. в€љ64 = ?
3. в€љ1 = ?
4. в€љ16 = ?
4. в€љ8 = ?
5. в€љ49 = ?
5. в€љ343 = ?
Done?
Here are the answers to the previous questions, hope you
get them right!
Square
Cube
1. 3
1. 3
2. 15
2. 6
3. 8
3. 1
4. 4
4. 2
5. 7
5. 7