Page 118 - Mathematics_Form_Two

Exponents and radicals

1 1 Activity 5�6: Determine roots of
(c) - numbers by using
31- 3 1+ calculators

2 1 1. Use any type of calculator to explore
(d) +
531 2 3- - how to calculate roots of numbers.
FOR ONLINE READING ONLY
2. Using a calculator of your choice,
Mathematics for Secondary Schools (f) 10 - 7 - 3 + 7 3. Copy the following table and use the
1
8
write the steps for finding a square
(e)

+
7 23-
5
4-
root or a cube root of a number.
1
27
procedures in task 2 to fill the blank
correct to 4 significant figures.
49
3. (g) (( 2 2 + 2 2 + ) ( ) ( 3 ÷ ÷ ÷ 2 - 3 2 - )) Number Square root Cube root
The area of a rectangular Manila
(
2
sheet is 4 2 3+ ) m . If one 121
side of the Manila sheet is
( 3 2 3 m,+ ) find the length of the 64
of the other side in radical form. 8.258
56.78
4. A container has a volume of
72 18 3 m .+ 3 If the length of the 0.0287

container is 6 + 3m, and height − 225
is 2 + 3 m,find the width of the 4. Share your results with others
container in radical form.
to illustrate how the answers are
5. A rectangular canvas has an area obtained.

of 50 14 3+ square metres. If one
side of the canvas is 5+ 3 m,
find the length of the other side in Exercise 5�12
radical form. In questions 1 to 16, use a scientific
calculator to evaluate each of the

Finding roots of numbers by expressions correct to 4 significant
calculators figures:
Roots of numbers can be obtained by 1. 2156 2. 3 1024
several methods which includes the use of
exponent and radical rules, mathematical 3. 267 4. 6.74
tables, and calculators. Engage in Activity
5.6 to explore the roots of numbers by 5. 5 0.57 6. 7 89.105
using a calculator.

112
Student's Book Form Two

11/10/2024 20:12:39
MATHEMATIC F2 v5.indd 112
MATHEMATIC F2 v5.indd 112 11/10/2024 20:12:39