Real Numbers Ri - Sub-sets of Real Numbers Set Fample Natural Numbers (1.2.3.4.5.1 Whole Numbers (W (0.1.2.3.4 -> Integers 132. -1,0,1,2,3 Rational Numbers (Q) Any number that can be expressed as a fraction - -0.3, 0.0.21. Irrational Numbers Cannot be written as a fraction or whole number ivVi V.) Delete ackspace Task 1. Write some examples for each of the 4 groups RATIONAL IRRATIONAL Entd INTERGERS WHOLE Sh R2 - Inequality symbols and their meaning HOW TO Othe 1721 a is less than Dis greater than a a is greater than bis less than a -28-32 355 is less than or equal to be o is at the most ols at the least b 182 14 025 o is greater than or equal to b 2323 als equal to b - 14.7 147 ab is not equal to b 15.99 = 16 a is approximately equal to b Task 2 Write your own examples in the table above. Week 1: (Online) Aral Numbers Peete to war EI R3 - Union and intersection of Sets The Union of a sti EVERYTHING A and The intersection is the abers in And The Union of A and B The intersection of Aands Dalele C B Badance 100 4 30 AUBE ANB Task Complete AU and An B in the brackets above R4 - Evaluate Absolute ValueExpressions The absolute value of a real number is its distance on a number line from O Ahnute value is written like BILDY AUDIO -10-9-8-7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 1 Ongin Negative immers Positive members Task 4 Evaluate Week 1 (Online) R5-Powers and Roots 4 mens 4 X 4 X 4-64 575x525 4 is the base and 3 is the power (exponent) 7255 (Because 5x525) V8 = 2 (Because 2 x 2 X 2 = 8) Task 5 Complete the following: 122 S = -22= (-2) = 149 V27 V16 R6 - Order of Operations () Step 1 Calculate everything in brackets and other grouping symbols. 2 Step 2 Calculate all exponents (powers) 4x6+122 Step 3 Do multiplication or division in the order they occur from left to right. 18+5-320 Step 4 Do addition and subtraction in order in which they occur from left to right Task 6 Calculate the following: (a) 34+2(32-2) = (b) S2+3[(8 - 24) - 7(3) = C) 4-206-3) + 5(2) = Week 1: (Online) Real Members