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Metric Prefix Flashcards: All 24 SI Names, Symbols & Powers of Ten

Learn all 24 current SI prefixes with 72 flashcards for name, case-sensitive symbol, and power-of-ten recall.

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These metric prefix flashcards cover all 24 SI prefixes currently recognized by NIST, from quetta at 10^30 to quecto at 10^-30. The 72 cards practice exactly three mappings for every prefix: name to case-sensitive symbol and power of ten; symbol to name and power of ten; and power of ten to name and case-sensitive symbol.

Case matters. M is mega while m is milli, and P/p, Z/z, Y/y, R/r, and Q/q also represent different prefixes. Each front labels the cue and requested mapping, so a bare symbol or exponent stays unambiguous on mixed-review and standalone surfaces. Each back starts with the answer.

The deterministic sequence begins with familiar metric prefixes, expands toward the extremes, and interleaves all three recall directions. Variants of the same prefix stay far apart, with at least three unrelated cards between them. Confusing uppercase and lowercase symbols are separated too.

This is a focused metric prefix quiz, not a full SI course. It excludes conversions, full decimal expansions, SI base and derived units, unit examples, pronunciation and spelling drills, IEC or binary prefixes, historical prefixes, and 10^0, which has no prefix. There are no card images.

The NIST Metric (SI) Prefixes page supplies the factual ledger. The prompts, answers, selection structure, metadata, sequence, and generated cover were independently authored; no NIST prose, examples, layout, or media were copied. Facts aren't claimed as proprietary. The original wording, organization, metadata, and cover are dedicated under CC0 1.0 to the extent applicable rights exist.

Independent study deck. Not affiliated with or endorsed by NIST.

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  1. Kadi namba 1

    Swali

    SI prefix name: kilo → case-sensitive symbol + power of ten

    Jibu

    k

    10310^{3}

  2. Kadi namba 2

    Swali

    SI prefix symbol (case-sensitive): M → name + power of ten

    Jibu

    mega

    10610^{6}

  3. Kadi namba 3

    Swali

    SI prefix power:

    10−210^{-2}

    → name + case-sensitive symbol

    Jibu

    centi

    c

  4. Kadi namba 4

    Swali

    SI prefix name: nano → case-sensitive symbol + power of ten

    Jibu

    n

    10−910^{-9}

  5. Kadi namba 5

    Swali

    SI prefix symbol (case-sensitive): h → name + power of ten

    Jibu

    hecto

    10210^{2}

  6. Kadi namba 6

    Swali

    SI prefix power:

    10−610^{-6}

    → name + case-sensitive symbol

    Jibu

    micro

    μ

  7. Kadi namba 7

    Swali

    SI prefix name: peta → case-sensitive symbol + power of ten

    Jibu

    P

    101510^{15}

  8. Kadi namba 8

    Swali

    SI prefix symbol (case-sensitive): d → name + power of ten

    Jibu

    deci

    10−110^{-1}

  9. Kadi namba 9

    Swali

    SI prefix power:

    10−310^{-3}

    → name + case-sensitive symbol

    Jibu

    milli

    m

  10. Kadi namba 10

    Swali

    SI prefix name: tera → case-sensitive symbol + power of ten

    Jibu

    T

    101210^{12}

  11. Kadi namba 11

    Swali

    SI prefix symbol (case-sensitive): p → name + power of ten

    Jibu

    pico

    10−1210^{-12}

  12. Kadi namba 12

    Swali

    SI prefix power:

    10110^{1}

    → name + case-sensitive symbol

    Jibu

    deka

    da

  13. Kadi namba 13

    Swali

    SI prefix name: giga → case-sensitive symbol + power of ten

    Jibu

    G

    10910^{9}

  14. Kadi namba 14

    Swali

    SI prefix symbol (case-sensitive): f → name + power of ten

    Jibu

    femto

    10−1510^{-15}

  15. Kadi namba 15

    Swali

    SI prefix power:

    101810^{18}

    → name + case-sensitive symbol

    Jibu

    exa

    E

  16. Kadi namba 16

    Swali

    SI prefix name: atto → case-sensitive symbol + power of ten

    Jibu

    a

    10−1810^{-18}

  17. Kadi namba 17

    Swali

    SI prefix symbol (case-sensitive): Z → name + power of ten

    Jibu

    zetta

    102110^{21}

  18. Kadi namba 18

    Swali

    SI prefix power:

    10−2410^{-24}

    → name + case-sensitive symbol

    Jibu

    yocto

    y

  19. Kadi namba 19

    Swali

    SI prefix name: ronna → case-sensitive symbol + power of ten

    Jibu

    R

    102710^{27}

  20. Kadi namba 20

    Swali

    SI prefix symbol (case-sensitive): q → name + power of ten

    Jibu

    quecto

    10−3010^{-30}

  21. Kadi namba 21

    Swali

    SI prefix power:

    10−2110^{-21}

    → name + case-sensitive symbol

    Jibu

    zepto

    z

  22. Kadi namba 22

    Swali

    SI prefix name: yotta → case-sensitive symbol + power of ten

    Jibu

    Y

    102410^{24}

  23. Kadi namba 23

    Swali

    SI prefix symbol (case-sensitive): r → name + power of ten

    Jibu

    ronto

    10−2710^{-27}

  24. Kadi namba 24

    Swali

    SI prefix power:

    103010^{30}

    → name + case-sensitive symbol

    Jibu

    quetta

    Q

  25. Kadi namba 25

    Swali

    SI prefix name: milli → case-sensitive symbol + power of ten

    Jibu

    m

    10−310^{-3}

  26. Kadi namba 26

    Swali

    SI prefix symbol (case-sensitive): k → name + power of ten

    Jibu

    kilo

    10310^{3}

  27. Kadi namba 27

    Swali

    SI prefix power:

    10210^{2}

    → name + case-sensitive symbol

    Jibu

    hecto

    h

  28. Kadi namba 28

    Swali

    SI prefix name: micro → case-sensitive symbol + power of ten

    Jibu

    μ

    10−610^{-6}

  29. Kadi namba 29

    Swali

    SI prefix symbol (case-sensitive): G → name + power of ten

    Jibu

    giga

    10910^{9}

  30. Kadi namba 30

    Swali

    SI prefix power:

    10−110^{-1}

    → name + case-sensitive symbol

    Jibu

    deci

    d

  31. Kadi namba 31

    Swali

    SI prefix name: centi → case-sensitive symbol + power of ten

    Jibu

    c

    10−210^{-2}

  32. Kadi namba 32

    Swali

    SI prefix symbol (case-sensitive): T → name + power of ten

    Jibu

    tera

    101210^{12}

  33. Kadi namba 33

    Swali

    SI prefix power:

    10610^{6}

    → name + case-sensitive symbol

    Jibu

    mega

    M

  34. Kadi namba 34

    Swali

    SI prefix name: deka → case-sensitive symbol + power of ten

    Jibu

    da

    10110^{1}

  35. Kadi namba 35

    Swali

    SI prefix symbol (case-sensitive): n → name + power of ten

    Jibu

    nano

    10−910^{-9}

  36. Kadi namba 36

    Swali

    SI prefix power:

    10−1210^{-12}

    → name + case-sensitive symbol

    Jibu

    pico

    p

  37. Kadi namba 37

    Swali

    SI prefix name: exa → case-sensitive symbol + power of ten

    Jibu

    E

    101810^{18}

  38. Kadi namba 38

    Swali

    SI prefix symbol (case-sensitive): a → name + power of ten

    Jibu

    atto

    10−1810^{-18}

  39. Kadi namba 39

    Swali

    SI prefix power:

    10−2710^{-27}

    → name + case-sensitive symbol

    Jibu

    ronto

    r

  40. Kadi namba 40

    Swali

    SI prefix name: yocto → case-sensitive symbol + power of ten

    Jibu

    y

    10−2410^{-24}

  41. Kadi namba 41

    Swali

    SI prefix symbol (case-sensitive): P → name + power of ten

    Jibu

    peta

    101510^{15}

  42. Kadi namba 42

    Swali

    SI prefix power:

    102110^{21}

    → name + case-sensitive symbol

    Jibu

    zetta

    Z

  43. Kadi namba 43

    Swali

    SI prefix name: quetta → case-sensitive symbol + power of ten

    Jibu

    Q

    103010^{30}

  44. Kadi namba 44

    Swali

    SI prefix symbol (case-sensitive): R → name + power of ten

    Jibu

    ronna

    102710^{27}

  45. Kadi namba 45

    Swali

    SI prefix power:

    10−1510^{-15}

    → name + case-sensitive symbol

    Jibu

    femto

    f

  46. Kadi namba 46

    Swali

    SI prefix name: zepto → case-sensitive symbol + power of ten

    Jibu

    z

    10−2110^{-21}

  47. Kadi namba 47

    Swali

    SI prefix symbol (case-sensitive): Y → name + power of ten

    Jibu

    yotta

    102410^{24}

  48. Kadi namba 48

    Swali

    SI prefix power:

    10−3010^{-30}

    → name + case-sensitive symbol

    Jibu

    quecto

    q

  49. Kadi namba 49

    Swali

    SI prefix name: mega → case-sensitive symbol + power of ten

    Jibu

    M

    10610^{6}

  50. Kadi namba 50

    Swali

    SI prefix symbol (case-sensitive): c → name + power of ten

    Jibu

    centi

    10−210^{-2}

  51. Kadi namba 51

    Swali

    SI prefix power:

    10310^{3}

    → name + case-sensitive symbol

    Jibu

    kilo

    k

  52. Kadi namba 52

    Swali

    SI prefix name: hecto → case-sensitive symbol + power of ten

    Jibu

    h

    10210^{2}

  53. Kadi namba 53

    Swali

    SI prefix symbol (case-sensitive): μ → name + power of ten

    Jibu

    micro

    10−610^{-6}

  54. Kadi namba 54

    Swali

    SI prefix power:

    10−910^{-9}

    → name + case-sensitive symbol

    Jibu

    nano

    n

  55. Kadi namba 55

    Swali

    SI prefix name: deci → case-sensitive symbol + power of ten

    Jibu

    d

    10−110^{-1}

  56. Kadi namba 56

    Swali

    SI prefix symbol (case-sensitive): m → name + power of ten

    Jibu

    milli

    10−310^{-3}

  57. Kadi namba 57

    Swali

    SI prefix power:

    10910^{9}

    → name + case-sensitive symbol

    Jibu

    giga

    G

  58. Kadi namba 58

    Swali

    SI prefix name: pico → case-sensitive symbol + power of ten

    Jibu

    p

    10−1210^{-12}

  59. Kadi namba 59

    Swali

    SI prefix symbol (case-sensitive): da → name + power of ten

    Jibu

    deka

    10110^{1}

  60. Kadi namba 60

    Swali

    SI prefix power:

    101210^{12}

    → name + case-sensitive symbol

    Jibu

    tera

    T

  61. Kadi namba 61

    Swali

    SI prefix name: quecto → case-sensitive symbol + power of ten

    Jibu

    q

    10−3010^{-30}

  62. Kadi namba 62

    Swali

    SI prefix symbol (case-sensitive): E → name + power of ten

    Jibu

    exa

    101810^{18}

  63. Kadi namba 63

    Swali

    SI prefix power:

    10−1810^{-18}

    → name + case-sensitive symbol

    Jibu

    atto

    a

  64. Kadi namba 64

    Swali

    SI prefix name: zetta → case-sensitive symbol + power of ten

    Jibu

    Z

    102110^{21}

  65. Kadi namba 65

    Swali

    SI prefix symbol (case-sensitive): y → name + power of ten

    Jibu

    yocto

    10−2410^{-24}

  66. Kadi namba 66

    Swali

    SI prefix power:

    101510^{15}

    → name + case-sensitive symbol

    Jibu

    peta

    P

  67. Kadi namba 67

    Swali

    SI prefix name: ronto → case-sensitive symbol + power of ten

    Jibu

    r

    10−2710^{-27}

  68. Kadi namba 68

    Swali

    SI prefix symbol (case-sensitive): Q → name + power of ten

    Jibu

    quetta

    103010^{30}

  69. Kadi namba 69

    Swali

    SI prefix power:

    102410^{24}

    → name + case-sensitive symbol

    Jibu

    yotta

    Y

  70. Kadi namba 70

    Swali

    SI prefix name: femto → case-sensitive symbol + power of ten

    Jibu

    f

    10−1510^{-15}

  71. Kadi namba 71

    Swali

    SI prefix symbol (case-sensitive): z → name + power of ten

    Jibu

    zepto

    10−2110^{-21}

  72. Kadi namba 72

    Swali

    SI prefix power:

    102710^{27}

    → name + case-sensitive symbol

    Jibu

    ronna

    R

Concentric luminous rings and nested translucent forms expanding from a warm center on a deep blue background.

kadi 72

Metric Prefix Flashcards: All 24 SI Names, Symbols & Powers of Ten

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