New Zealand

Level 5

Simplify $\sqrt{25}$√25.

Easy

< 1min

Simplify $3\sqrt{81}$3√81.

Easy

< 1min

What is the largest square number that divides exactly into $75$75?

Easy

1min

Consider the expression $\sqrt{19}$√19.

Easy

< 1min

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Use prime numbers, common factors and multiples, and powers (including square roots)