What is the total?

+1 vote
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This must be done in your head only. Do NOT use paper and pencil or a calculator. Try it.

posted May 6, 2014

2 Solutions

+1 vote

1000+1000+1000+1000=4000
40+30+20+10=100
So, 4000+100 = 4100.

solution May 8, 2014

4100(trick- add the thousands first then the rest)

solution May 7, 2014

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