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Fractions , indices , estimation + rounding , HCF + LCM
21/10/2023
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FRACTIONS taking ашау XD + Yb acteting хь х Ухь Хть Ухь t ху + a^ bxy Y bxy хха Y b a сть Keep Flive Change. V keep first flip second quaction. guesetion multiplying + dividing хха Yxb х у чь mixed numbers multiply the whole number by the elenominator then ad the numerator to а тор heavy fraction маке x b a ay Yb ау by ха 76 спанде зушье ya – xbtay Yb xb-ax Yb Inclices Squenreel 7²: 2×2=4 23= 2x2x2 = 8 To the power of.... 4: 2 2ª = 2x2x2x2=16 5:25 : 2×2х2х2*2=32 ect negative 2'- 2 2². 4 2 eet Fraction = √2 2 > 23:32 23 = (3(2) tabedd 2 to anything the powerag o = 1 214 X Multiplying 2'x2 = 2 (23)4: 28х4 - 212 divicting 25 26-2 - 23 22 1 = 2 6 BETMATION & Rounching Eestimation 0 F no need to nound 1] 21 nound clown If x <s (MJLOOM∞ 3 4 6 nounel up y x 25 Istimation nound up 67.56 46.75 × 3.218 123456789 10.00 [nawet 4d.p 3 dl.p 1,000h Lenteger 100th 201₂ P ↓ 50 x 3 =150 10th 1clop Significant figures 1st 2nd 3rd 4th 0.1203 ↓ ↓ any other 0 counts. first number nound. clown 25 has to be an integer LCM + HCF howest common multiple eg- cavest common multiple of 180 + 220 180 3 90 2 (5) 180 45 3 2 (6) 3 5 (3 O 6 220 220 71 3 110 255 LCM = 20 -2×2×5= 20 Hignest Common Factor eg- gines the HCF of 24 and 36. 24 36 2 12 2 18 21 3 9 2 241 UNO 3 36 2x2x2x3x3 = 72 HCF = 72
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