Despite this, parents only manage to spend less than 10 minutes a day helping their children with their learning, according to online tuition service mytutor, which commissioned the survey.
More than a quarter (27%) of children surveyed could not add £2.36 and £1.49 to get £3.85; more than one in five (22%) could not use the correct version of "they're", "there" or "their" in a sentence; almost a third (31%) could not pick the correct use of an apostrophe from three simple sentences, and more than four in 10 (42%) couldn't spell the word "secretaries" correctly.