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Episode 5 of 7

Missing numbers in three-term ratios

The question

Fill in the missing numbers.

  1. (a) 21 : 12 : 6 = 7 : ____ : ____

  2. (b) 16 : 40 : 56 = ____ : 5 : ____

  3. (c) 40 : 25 : 15 = ____ : ____ : 3

  4. (d) 4 : 5 : 9 = 24 : ____ : ____

  5. (e) 32 : 56 : 64 = 4 : ____ : 8

  6. (f) 27 : 36 : 63 = 3 : ____ : ____

Try it first, then show the answer

Answer

  • (a)7 : 4 : 2
  • (b)2 : 5 : 7
  • (c)8 : 5 : 3
  • (d)24 : 30 : 54
  • (e)4 : 7 : 8
  • (f)3 : 4 : 7
Look

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Episode 5 · Now playing

Missing numbers in three-term ratios
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Episode 6

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Episode 7

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