1. Whole Numbers
Interactive practice questions
Consider the following prime factorisations:
$224=2\times2\times2\times2\times2\times7$224=2×2×2×2×2×7
$196=2\times2\times7\times7$196=2×2×7×7
Find the greatest common factor of $224$224 and $196$196.
Easy
1min
Consider the following prime factorisations:
$90=2\times3\times3\times5$90=2×3×3×5
$1800=2\times2\times2\times3\times3\times5\times5$1800=2×2×2×3×3×5×5
Easy
1min
Consider the following prime factorisations:
$378=2\times3\times3\times3\times7$378=2×3×3×3×7
$1764=2\times2\times3\times3\times7\times7$1764=2×2×3×3×7×7
Medium
1min
Consider the following prime factorisations:
$12250=2\times5^3\times7^2$12250=2×53×72
$700=2^2\times5^2\times7$700=22×52×7
Easy
1min
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