47 45 43 41 39 37 35 33 31 29 27 25 23 21 19 17 15 13 11 9 7 5 3 1 0 –1 –3 –5 –7 –9 –11 –13 –15 –17 –19 –21 –23 –25 –27 –29 –31 –33 –35 –37 –39 –41 –43 –45 mismunur talnanna 90 og 36 Rannsakaðu betur! Leystu krossgátuna. 1 3 7 9 2 4 5 6 10 11 14 13 15 8 16 Reiknaðu í talnahúsi. Lárétt 1 150 + 125 2 1370 + 212 3 1350 + 555 4 4000 – 350 5 8 • 9 6 327 – 181 8 750 – 345 13 1020 + 210 16 44 : 4 Lóðrétt 3 10 • 10 4 734 – 370 7 10000 – 799 9 2500 + 3006 10 4 • 100 11 218 – 104 14 518 + 113 15 36 : 2 Þ H T E Þ H T E Þ H T E 5 3 9 1 6 2 8 4 7 5 8 0 + 2495 –3157 –1763 Þ H T E Þ H T E Þ H T E 9 7 2 8 3 4 7 9 8 5 0 5 –4388 +2096 +1247
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