BSL Maths Glossary - approximate - Definition (symbol ~)
Subject level: Foundation
Approximate is when I give a number that is not exact, it’s almost, but not quite. Giving a rough number not the exact number. Suppose a joiner goes to a shop to buy a piece of wood. He asks for a piece of wood measuring 7.89 metres exactly. The shopkeeper says Mmm don’t know about that how about one approximately 8 metres – and he measures it out. The joiner says thank you very much and off he goes with his wood.