1) <u>(5,69 + 1,606) - 1,29</u> = 7,296 - 1,29 = 6,006
2) <u>(3,7 - 2,388) + 0,76 </u>= 1,312 + 0,76 = 2,072
3) <u>(8,59 + 2,31) - (8,59 - 2,31)</u> = 10,9 - 6,28 = 4,62
4) <u>54,002 - (28,7 - 5,001)</u> = 54,002 - 23,699 = 30,303