Back to Square Roots by Prime Factorisation — Problem 2 · Task Set 13

Exercises: Square Roots by Prime Factorisation

Work through each section in order. Use prime factorisation and the pairing method to find square roots, and verify each answer by squaring it.

Grade 7·17 problems·~28 min·Uganda NCDC Primary 7 Mathematics·lesson·operations-05
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A

Recall / Warm-Up

These problems review skills you already know.

1.

Find 81\sqrt{81}.