Substitute numbers for letters and calculate.
Replace each letter with its number, work out the calculation (remember BIDMAS), then convert the answer back into a letter.
Try each one before you look at the answer: answering from memory is what makes it stick. Tap an option to check it. Most children get three or four right at first; five out of five means move on to the next topic.
Work out the sum and give the answer as a letter.
A = 3, B = 8, C = 1, D = 4, E = 6. B × C − D = ?
Answer: D, D
Work out the sum and give the answer as a letter.
A = 4, B = 8, C = 5, D = 3, F = 12. C × D − F = ?
Answer: D, D
Work out the sum and give the answer as a letter.
B = 3, C = 10, D = 4, E = 5, F = 2. D × B − C = ?
Answer: E, F
Work out the sum and give the answer as a letter.
A = 2, B = 5, D = 1, E = 4, F = 8. B × A − F = ?
Answer: A, A
Work out the sum and give the answer as a letter.
A = 2, B = 10, C = 5, D = 4, E = 6. D × A − E = ?
Answer: A, A
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