Four Make 999

Choose four different numbers from the table and add them up.

275 305 319 323
291 260 222 242
212 172 285 309
339 226 271 301

How many different ways are there of making 999?

[Note to teacher: Click on the numbers above to select them. Correct solutions will be recorded above
but the application does not check for repeats or the same numbers added in a different order.


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Topics: Starter | Arithmetic

  • Rebecca Laura Holly Amy Georgia Tyler & Kieran, Whitby High, Ellesmere Port
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  • More Solutions from Whitby Technology College:

    235 + 280 + 212 + 272 = 999
    280 + 280 + 227 + 212 = 999
    272 + 272 + 227 + 228 = 999
  • J. Adam, Purbrook Junior
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  • Jasmine in my maths class found 363 + 363 + 273 = 999. Well done!
  • Belvedere Academy Liverpool, Year 7 Set 3
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  • 271 + 280 + 291 + 157 (Yasmine)
    265 + 275 + 291 + 168 (Demi)
    We had more but did not have time to put them on.
  • Lauren Livingstone, Holyrood Secondary
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  • Mrs Boussouara's maths class found this difficult. Although it made us think about numbers and got our brains working.
  • Holyrood Secondary, Glasgow
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  • Mrs Boussouara's Maths class thought this was tricky. We liked doing this .we got it in the end.
    Jack.Farzad .Nicole . (First year).
  • S2, JPA Glasgow
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  • 263+255+311+170
    380+170+194+255
    436+194+199+170
    375+170+255+199
    372+170+194+263.
  • Kiefer Kids, Cottage Hill In California
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  • Tougher than we thought!
    466+195+152+186=999
    152+383+278+186=999
    162+259+195+383=999
    393+152+195+259=999.
  • Primary 7, Meethill Primary Peterhead
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  • We managed to get 6 different combinations. Our STAR pupils were Patrick and Jamie. We showed good perseverance throughout this challenge.
  • Transum,
  •  
  • Thanks everyone for your comments. Good to hear that this Starter is providing a suitable challenge. Please note that each time this page is loaded a different of numbers appears in the grid above ... just in case you were wondering why the answers mentioned in the comments above do not work for you! Answers are provided below for Transum subscribers.
  • Nic, Glen Eden Intermediate
  •  
  • 255+348+158+238.
  • David, Thailand
  •  
  • We got nine boys!

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Note to teacher: Doing this activity once with a class helps students develop strategies. It is only when they do this activity a second time that they will have the opportunity to practise those strategies. That is when the learning is consolidated. Click the button above to regenerate another version of this starter from random numbers.



Try "Three Make 1000", it's a little easier!


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