Postupně vypočítej zadané příklady.

230 + 48 =	250 – 66 =	310 – 39 =	370 + 72 =
780 + 51 =	630 + 87 =	900 – 99 =	290 + 25 =
540 – 83 =	910 – 14 =	630 – 78 =	480 + 92 =
420 – 77 =	450 + 93 =	210 – 44 =	860 – 96 =
390 + 59 =	580 + 61 =	420 – 85 =	610 – 38 =