**57 Divisibility rules for 4, 6, 8**

- Rules

**56 Divisibility rules for 2,3,5,9,10**

- Rules

**55 Simple powers of numbers up to 10.**

eg 5 to the power of 2 = 25.

eg 5 to the power of 2 = 25.

**54 Square numbers to 100 and**

corresponding roots eg 7 to power of 2 = 49.

Square root of 49 = 7

corresponding roots eg 7 to power of 2 = 49.

Square root of 49 = 7

- square root calculation

- Prime numbers

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