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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.

Amakhadi akuleli qoqo

  1. Ikhadi 1

    Umbuzo

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

    Impendulo

    k

    10310^{3}

  2. Ikhadi 2

    Umbuzo

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

    Impendulo

    mega

    10610^{6}

  3. Ikhadi 3

    Umbuzo

    SI prefix power:

    10−210^{-2}

    → name + case-sensitive symbol

    Impendulo

    centi

    c

  4. Ikhadi 4

    Umbuzo

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

    Impendulo

    n

    10−910^{-9}

  5. Ikhadi 5

    Umbuzo

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

    Impendulo

    hecto

    10210^{2}

  6. Ikhadi 6

    Umbuzo

    SI prefix power:

    10−610^{-6}

    → name + case-sensitive symbol

    Impendulo

    micro

    μ

  7. Ikhadi 7

    Umbuzo

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

    Impendulo

    P

    101510^{15}

  8. Ikhadi 8

    Umbuzo

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

    Impendulo

    deci

    10−110^{-1}

  9. Ikhadi 9

    Umbuzo

    SI prefix power:

    10−310^{-3}

    → name + case-sensitive symbol

    Impendulo

    milli

    m

  10. Ikhadi 10

    Umbuzo

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

    Impendulo

    T

    101210^{12}

  11. Ikhadi 11

    Umbuzo

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

    Impendulo

    pico

    10−1210^{-12}

  12. Ikhadi 12

    Umbuzo

    SI prefix power:

    10110^{1}

    → name + case-sensitive symbol

    Impendulo

    deka

    da

  13. Ikhadi 13

    Umbuzo

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

    Impendulo

    G

    10910^{9}

  14. Ikhadi 14

    Umbuzo

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

    Impendulo

    femto

    10−1510^{-15}

  15. Ikhadi 15

    Umbuzo

    SI prefix power:

    101810^{18}

    → name + case-sensitive symbol

    Impendulo

    exa

    E

  16. Ikhadi 16

    Umbuzo

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

    Impendulo

    a

    10−1810^{-18}

  17. Ikhadi 17

    Umbuzo

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

    Impendulo

    zetta

    102110^{21}

  18. Ikhadi 18

    Umbuzo

    SI prefix power:

    10−2410^{-24}

    → name + case-sensitive symbol

    Impendulo

    yocto

    y

  19. Ikhadi 19

    Umbuzo

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

    Impendulo

    R

    102710^{27}

  20. Ikhadi 20

    Umbuzo

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

    Impendulo

    quecto

    10−3010^{-30}

  21. Ikhadi 21

    Umbuzo

    SI prefix power:

    10−2110^{-21}

    → name + case-sensitive symbol

    Impendulo

    zepto

    z

  22. Ikhadi 22

    Umbuzo

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

    Impendulo

    Y

    102410^{24}

  23. Ikhadi 23

    Umbuzo

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

    Impendulo

    ronto

    10−2710^{-27}

  24. Ikhadi 24

    Umbuzo

    SI prefix power:

    103010^{30}

    → name + case-sensitive symbol

    Impendulo

    quetta

    Q

  25. Ikhadi 25

    Umbuzo

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

    Impendulo

    m

    10−310^{-3}

  26. Ikhadi 26

    Umbuzo

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

    Impendulo

    kilo

    10310^{3}

  27. Ikhadi 27

    Umbuzo

    SI prefix power:

    10210^{2}

    → name + case-sensitive symbol

    Impendulo

    hecto

    h

  28. Ikhadi 28

    Umbuzo

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

    Impendulo

    μ

    10−610^{-6}

  29. Ikhadi 29

    Umbuzo

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

    Impendulo

    giga

    10910^{9}

  30. Ikhadi 30

    Umbuzo

    SI prefix power:

    10−110^{-1}

    → name + case-sensitive symbol

    Impendulo

    deci

    d

  31. Ikhadi 31

    Umbuzo

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

    Impendulo

    c

    10−210^{-2}

  32. Ikhadi 32

    Umbuzo

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

    Impendulo

    tera

    101210^{12}

  33. Ikhadi 33

    Umbuzo

    SI prefix power:

    10610^{6}

    → name + case-sensitive symbol

    Impendulo

    mega

    M

  34. Ikhadi 34

    Umbuzo

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

    Impendulo

    da

    10110^{1}

  35. Ikhadi 35

    Umbuzo

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

    Impendulo

    nano

    10−910^{-9}

  36. Ikhadi 36

    Umbuzo

    SI prefix power:

    10−1210^{-12}

    → name + case-sensitive symbol

    Impendulo

    pico

    p

  37. Ikhadi 37

    Umbuzo

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

    Impendulo

    E

    101810^{18}

  38. Ikhadi 38

    Umbuzo

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

    Impendulo

    atto

    10−1810^{-18}

  39. Ikhadi 39

    Umbuzo

    SI prefix power:

    10−2710^{-27}

    → name + case-sensitive symbol

    Impendulo

    ronto

    r

  40. Ikhadi 40

    Umbuzo

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

    Impendulo

    y

    10−2410^{-24}

  41. Ikhadi 41

    Umbuzo

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

    Impendulo

    peta

    101510^{15}

  42. Ikhadi 42

    Umbuzo

    SI prefix power:

    102110^{21}

    → name + case-sensitive symbol

    Impendulo

    zetta

    Z

  43. Ikhadi 43

    Umbuzo

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

    Impendulo

    Q

    103010^{30}

  44. Ikhadi 44

    Umbuzo

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

    Impendulo

    ronna

    102710^{27}

  45. Ikhadi 45

    Umbuzo

    SI prefix power:

    10−1510^{-15}

    → name + case-sensitive symbol

    Impendulo

    femto

    f

  46. Ikhadi 46

    Umbuzo

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

    Impendulo

    z

    10−2110^{-21}

  47. Ikhadi 47

    Umbuzo

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

    Impendulo

    yotta

    102410^{24}

  48. Ikhadi 48

    Umbuzo

    SI prefix power:

    10−3010^{-30}

    → name + case-sensitive symbol

    Impendulo

    quecto

    q

  49. Ikhadi 49

    Umbuzo

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

    Impendulo

    M

    10610^{6}

  50. Ikhadi 50

    Umbuzo

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

    Impendulo

    centi

    10−210^{-2}

  51. Ikhadi 51

    Umbuzo

    SI prefix power:

    10310^{3}

    → name + case-sensitive symbol

    Impendulo

    kilo

    k

  52. Ikhadi 52

    Umbuzo

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

    Impendulo

    h

    10210^{2}

  53. Ikhadi 53

    Umbuzo

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

    Impendulo

    micro

    10−610^{-6}

  54. Ikhadi 54

    Umbuzo

    SI prefix power:

    10−910^{-9}

    → name + case-sensitive symbol

    Impendulo

    nano

    n

  55. Ikhadi 55

    Umbuzo

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

    Impendulo

    d

    10−110^{-1}

  56. Ikhadi 56

    Umbuzo

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

    Impendulo

    milli

    10−310^{-3}

  57. Ikhadi 57

    Umbuzo

    SI prefix power:

    10910^{9}

    → name + case-sensitive symbol

    Impendulo

    giga

    G

  58. Ikhadi 58

    Umbuzo

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

    Impendulo

    p

    10−1210^{-12}

  59. Ikhadi 59

    Umbuzo

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

    Impendulo

    deka

    10110^{1}

  60. Ikhadi 60

    Umbuzo

    SI prefix power:

    101210^{12}

    → name + case-sensitive symbol

    Impendulo

    tera

    T

  61. Ikhadi 61

    Umbuzo

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

    Impendulo

    q

    10−3010^{-30}

  62. Ikhadi 62

    Umbuzo

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

    Impendulo

    exa

    101810^{18}

  63. Ikhadi 63

    Umbuzo

    SI prefix power:

    10−1810^{-18}

    → name + case-sensitive symbol

    Impendulo

    atto

    a

  64. Ikhadi 64

    Umbuzo

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

    Impendulo

    Z

    102110^{21}

  65. Ikhadi 65

    Umbuzo

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

    Impendulo

    yocto

    10−2410^{-24}

  66. Ikhadi 66

    Umbuzo

    SI prefix power:

    101510^{15}

    → name + case-sensitive symbol

    Impendulo

    peta

    P

  67. Ikhadi 67

    Umbuzo

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

    Impendulo

    r

    10−2710^{-27}

  68. Ikhadi 68

    Umbuzo

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

    Impendulo

    quetta

    103010^{30}

  69. Ikhadi 69

    Umbuzo

    SI prefix power:

    102410^{24}

    → name + case-sensitive symbol

    Impendulo

    yotta

    Y

  70. Ikhadi 70

    Umbuzo

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

    Impendulo

    f

    10−1510^{-15}

  71. Ikhadi 71

    Umbuzo

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

    Impendulo

    zepto

    10−2110^{-21}

  72. Ikhadi 72

    Umbuzo

    SI prefix power:

    102710^{27}

    → name + case-sensitive symbol

    Impendulo

    ronna

    R

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

amakhadi angu-72

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

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