Integers - Quick Revision

Transcript

Integers - Quick RevisionLet’s look at Different types of numbers first Natural Numbers are the ones we use for counting: (1, 2, 3...). When we add Zero (0), we get the set of Whole Numbers. Real-life Example: Counting apples in a basket. You can have 3 apples (Natural), or 0 apples (Whole) Negative NumbersTherefore , Just like positive numbers : 1, 2, 3, 4, 5, …... We have negative numbers : −1, −2, −3, −4, −5, ……. For every positive number, there is an opposite negative number. These represent values less than zero Real-life Example: Positive & Negative Numbers in Real Life An infographic showing how we use positive and negative numbers every day to represent values above or below a starting point. Temperature Table 1: Bank Account \captionsetup{labelformat=empty} Paycheck Received Grocery Shopping Final Balance Positive numbers are deposits (money in), negative numbers are withdrawals (money out). Geography & Elevation Positive is above sea level, negative is below sea level. Sports Statistics Goal Difference (Scored more goals than conceded) Penalty Yards (Football) (Lost 15 yards due to a foul) Positive for gains and advantages, negative for losses and penalties.What about 0? 0 is neither positive, nor negative. Integers What Are Integers? A simple guide to the building blocks of numbers. Integers include all positive numbers, negative numbers, and zero. Visualized on a Number Line . -2 -1 0 1 2 3... ← Negative Integers (Zero) Positive Integers → These ARE Integers -250 -3 0 7 These are NOT Integers -1.5 9.99 π 1,984 These are decimals, fractions, or irrational numbers.