Question 163657
The key is to convert to equivalent units then divide.
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1. 20m 4dm divided by 12
20m=2m(100 dm/m)=200dm
20m 4dm=204 dm
204 dm/12=17 dm
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2.12cm 16mm=12(10)+16=136mm
136mm/8=17 mm
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3.9 km 300m=9(1000)+300=9300 m
9300m/4=2325 m