Cubes day 2.notebook
May 10, 2017
Second key to find a cube root
x
√
3
x
to find a cube
Perfect Cube Roots
Perfect cube : A cube of a whole number
root x3
1
2
3
4
5
6
root x3
7
8
9
10
11
12
Cubes day 2.notebook
May 10, 2017
Find the cube of 12? 2(
(
3
Evaluate: 73
(­11)3 4
Find the cube root for the following:
(a) 2197 (e) 3 8 125
(b) ­1331
(f)
3 1 512
(g)
3
(c) 3375
(d) ­5832
­27
64
Cubes day 2.notebook
May 10, 2017
Use a cube root symbol to write the edge length of the cube. Then find the cube root. Check your answer by multiplying.
Volume = 64,000 ft3 Volume = ft3 Find the cube root.
1. 512
2. 3. 4. 5. Evaluate the expression.
−125 343
­729
Cubes day 2.notebook
May 10, 2017
Evaluate the expression for the given value of the variable.
Solving Equations Using Cube Roots
x3 = 729
x3 = 64­1
x3 = 216­1
x3 = 4913
Cubes day 2.notebook
May 10, 2017
Cubes day 2.notebook
May 10, 2017