Square One TV shows kids how to properly round numbers. Mathematics R US offers a rounding service for their customers. They offer a special price in exchange for rounding numbers to the nearest tenth.
Orchid asked Ohlm to get her 18 apples and 15 hot chocolates, but he comes back empty-handed because the cook, Oksana, only hands out snacks in groups of ten. Orchid doesn't need the exact amount of snacks she asked for, so Otis suggests rounding to the nearest ten. Since Ohlm is not familiar with how to round, Otis explains it to him.