SPEAKING Discuss the Maths facts and try to guess which options are correct. Then listen and check your answers. Maths facts 1 It is thought that numbers and counting began with the number zero / one. 2 Arithmetic is considered to have originated around 20,000/6,000 years ago in Sumer. 3 The Egyptians / Romans | Focus 4. Second Edition. Student's Book | 1/106