Halve It

A Maths Starter of The Day

Start with 512.
Halve it to get 256
Halve it to get 128

Continue as far as possible
[Decimal Fractions are allowed]

zvzvzvzvzvzvzvz

 

 

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Keywords: Starter | Arithmetic | Number Patterns

  • Teacher - to - be, England
  • Sunday, March 09, 2008
  • "I like this.. maybe give a few more numbers and get them to practise. Then try doubling."
  • 7abM2, King Alfred's College, Oxfordshire UK
  • Monday, March 09, 2009
  • "We found this a challenging puzzle. But in the 5mins we managed to write 27 numbers. Can you beat this?"

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This starter has scored a mean of 2.8 out of 5 based on 52 votes.
 

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Answers

512
256
128
64
32
16
8
4
2
1
0.5
0.25
0.125
0.0625
0.03125
0.015625
0.0078125
0.00390625
0.001953125
0.0009765625
0.00048828125
0.000244140625
0.0001220703125
0.00006103515625
0.000030517578125
1.52587890625E-05
7.62939453125E-06
3.814697265625E-06
1.9073486328125E-06
9.5367431640625E-07
4.76837158203125E-07
2.38418579101563E-07
1.19209289550781E-07
5.96046447753906E-08
2.98023223876953E-08
1.49011611938477E-08
7.45058059692383E-09
3.72529029846191E-09
1.86264514923096E-09
9.31322574615479E-10
4.65661287307739E-10
2.3283064365387E-10
1.16415321826935E-10
5.82076609134674E-11
2.91038304567337E-11
1.45519152283669E-11
7.27595761418343E-12
3.63797880709171E-12
1.81898940354586E-12
9.09494701772928E-13
4.54747350886464E-13