| Subject | English | Russian |
| math. | reduce by one half | уменьшить вполовину |
| gen. | reduce the amount by one half | уменьшать количество на половину (the party by half the number, the price by 10 per cent, the journey to A. by one and a half days, etc., и т.д.) |
| gen. | reduce the amount by one half | сокращать количество на половину (the party by half the number, the price by 10 per cent, the journey to A. by one and a half days, etc., и т.д.) |