ASVAB Skilled Technical Practice Test

Which prefix means 'ten'

bi- deca- anti- extra-

Correct Answer:

deca-

Explanation:

The concept being tested is how prefixes convey numbers. The prefix deca- denotes ten, so it fits the question exactly. You can see it in words like decagon (a ten-sided shape), decade (a period of ten years), and decapod (an animal with ten limbs). The other options code different ideas: bi- means two, anti- means against, and extra- means outside or beyond. Because the question asks which prefix represents ten, deca- is the correct choice.

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