| English | Russian |
| reduce by half | сокращать наполовину |
| reduce by half | уменьшать наполовину |
| reduce by half | сокращать вдвое |
| 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.) |
| 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.) |