Mental Arithmetic Sets 21 and 22

Multiples, square numbers and prime numbers all feature in these sets of mental arithmetic.

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This week the questions are all about time, including days of the month, years and centuries.

Area, perimeter, estimating and angle all come into today's questions.

Two sets of questions to keep those addition and subtraction skills up to scrath.

Fractions, addition and subtraction are all on the menu today.

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