4м3дм6см+4дм3см= 7м3дм5см+1м3дм6см=
356см-2м4дм1см=
3ц40кг+5ц70кг=
1т-600кг=
1ч35мин+25мин=
1ч50мин-60мин=
90мин-1ч20мин=
6ц400кг=
7ц20кг=
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