Estimating squares and cubes.notebook
May 11, 2017
Estimating Square and Cube Roots
Do Now: Evaluate the following:
+ 961
400
Perfect square­ A number made by squaring a whole number. 1
4
9
16
25
36
49
64
81
100
121
144
3
32744
­74088
Perfect cube­ A number made by cubing a whole number.
1
8
27
64
125
216
343
512
729
1000
1331
1728
Today we will be doing two things: Estimating and Rounding. We will be using NON­perfect squares and cubes
Estimating ­ determining your answer PRIOR to calculating your solution
Rounding ­ Replacing your answer closer to another number with less decimal places.
Estimating happens first and rounding happens last!
Estimating squares and cubes.notebook
May 11, 2017
No Calculator.
Find two integers that the square root is in between.
40
_ 105
_ 133
92
1
4
9
16
25
36
49
64
81
100
121
144
No Calculator.
Find two integers that the cube root is in between.
3 29
3 ­619
3 431
3
758
1
8
27
64
125
216
343
512
729
1000
1331
1728
Estimating squares and cubes.notebook
May 11, 2017
Find two integers that the root is in between. No Calculator.
_ 97
3
3
30
125
81
Use Calculator to find each value to the nearest tenth
+ 152
5120
­ 61
3
77
3
349
3 ­863
Find each value to the nearest hundredth.
91.7
3 513
33
+ 214
A cube shaped toy is made of 125 small cubes. How many small cubes are on each edge of this toy?
Estimating squares and cubes.notebook
You want to sew a fringe on a square tablecloth with an area of 500 square inches. Calculate the length of each side of the tablecloth and the length of fringe you will need to the nearest tenth of an inch.
May 11, 2017