The top performer in maths is Singapore, which overhauled their education system in the 1980s following poor international performance.
The UK remains a middle-ranking performer -- behind countries such as Japan, Estonia, Finland and Vietnam.
According to the report run by the OECD, UK has slipped down one place in maths to 27th in the world.
Nearly 90 per cent of respondents to a survey by 'Singapore Maths publisher Maths - No Problem, said they believed that there is insufficient funding for training teachers in the mastery method and rolling it out in British schools.
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They also said the government is not giving enough funding, or support, to encourage take-up of the mastery method of maths teaching used by top-performing Singapore.
The mastery method has the support of the government, which recently announced funding of 41 million pounds over four years to support teaching maths for mastery in 8,000 primary schools in England, the UK-based group's survey said.
But a majority of survey respondents (60.5 per cent) said that lack of understanding of maths mastery remains a barrier to wider adoption by schools and over 49 per cent said teachers' lack of confidence in their own abilities in teaching maths also hampers roll-out.
"We need to build the foundations in primary school. In a global economy with increasing automation, there simply won't be jobs for those who aren't confident in maths," he said.
The PISA results showed the top seven maths performers were from Asian countries/jurisdictions.
Casimir said that because East Asian countries continue to outperform the rest of the world, it was tempting to assume that mathematical performance is linked to cultural differences.