Which prefix means 'ten'

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Multiple Choice

Which prefix means 'ten'

Explanation:
Recognizing prefixes that denote quantities helps you decode the meaning of unfamiliar words. Ten is conveyed by the prefix deca-, which comes from the Greek deka meaning ten. You’ll see it in terms like decagon (a ten-sided shape), decade (a span of ten years), and decagram. It’s also used as an SI prefix for 10 times a unit. The other options don’t indicate ten: extra- means beyond or outside; a- is a negative or without prefix; bi- means two. So deca- is the best fit for the meaning of ten.

Recognizing prefixes that denote quantities helps you decode the meaning of unfamiliar words. Ten is conveyed by the prefix deca-, which comes from the Greek deka meaning ten. You’ll see it in terms like decagon (a ten-sided shape), decade (a span of ten years), and decagram. It’s also used as an SI prefix for 10 times a unit.

The other options don’t indicate ten: extra- means beyond or outside; a- is a negative or without prefix; bi- means two. So deca- is the best fit for the meaning of ten.

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