3м8дм+6м2дм-7м7дм???5дм2см-19см+3дм6см+3дм1см??

Question

3м8дм+6м2дм-7м7дм???5дм2см-19см+3дм6см+3дм1см??

Answer 1

380см+620см-770см=1000см-770см=230см(23дм)
52см-19см+36см+31см=33см+36см+31см=100см
1м=100см
1дм=10см