Modular Arithmetic

Mathematics SSS 1 First Term

WEEK 3

Modular Arithmetic

Performance Objectives

Students should be able to;

1. Study laws of indices
2. Solve problems related to laws of indices
3. Study indical equations and solve exercises

Revisions on Integers

Content

Recall: Integers are counting whole numbers, either positive or negative. Examples 1, 5, 20, −1, −5, e.t.c.

These numbers can be added, subtracted, divided or multiplied.

Addition of integers

1. 486 + 289 = 775

2. −25 + (−78) = −103

Subtraction of integers

1. 582 − 328 = 254

2. 902 − 437 = 465

Multiplication of integers

1. 181 × 42 = 7602

2. 208 × 5 = 1040

Division of integers

1. 972 ÷ 27 = 97227 = …