1km=___ cm, 100000, 10000, 1000, 1cm =____ mm, 100, 10, 10000, 1m=______mm, 100, 1000, 10, Subtract 1m80cm from 22m72cm, 20m80cm, 21m92cm, 20m92cm, Add 45km876m+12km89m, 57km965m, 57km965km, 58km864m, Multiply 14m67cm by 4cm, 58km68m, 58m68cm, 60m, Add 14km346m and 17km, 31km346m, 31km0m, Both are correct, 1km=______ mm, 1000000, 10000000000, 100000, Multiply 67km14m by 5, 335m70cm, 335km70cm, 355km70m, Subtract 13m67cm-1250cm, 1m12cm, 1m00cm, 1km2m

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