## 1 2 3 4 5 6 7 8 9 = 100

This equation is incomplete: 1 2 3 4 5 6 7 8 9 = 100

One way to make it accurate is by adding seven plus and minus signs, like so.

1 + 2 + 3 – 4 + 5 + 6 + 78 + 9 = 100

How can you do it using only 3 plus or minus signs?

123 – 45 – 67 + 89 = 100

Posted in Brain Teasers

15 Comments on "1 2 3 4 5 6 7 8 9 = 100"

Jessica says
April 7, 2015 @ 09:34

That is very clever

Tamoshi says
April 8, 2015 @ 00:48

123-45-67+89=100
^_^

Jackie says
September 27, 2016 @ 22:50

Idk that’s how

Akshat says
November 19, 2016 @ 00:10

1+2+3+4+5+6+7+8×9=100

Niyibizi says
December 7, 2016 @ 13:31

this require a person with above 100 IQ

iko says
January 10, 2017 @ 12:35

1 2 3 4 5 6 7 8 9=50
?

Yared Genene says
April 19, 2017 @ 03:45

1*2+3*4*5-6+7+8-9=100

Laquanda says
August 17, 2017 @ 18:08

1+2+3+4+5+6+7+8×9=100

Sjörk says
October 24, 2017 @ 05:24

1+2+3+4+5+6+7+8×9=100

@Yared Genene That’s 62.

Thanks to Laquanda and Sjörk, but the riddle asked how you could use only 3 plus or minus signs.

iPhone 5 says
December 13, 2018 @ 10:40

52+39+6-8+7+4×1=100

JENEEFUN says
February 27, 2019 @ 01:14

1 x [ (2×9) + (3×8) + (4×7) + (5×6) ] = 100

Kumkum says
October 10, 2019 @ 12:31

Dainius says
November 7, 2019 @ 13:19

123-4-5-6-7+8-9=100

Phuluso maliavusa says
February 10, 2020 @ 02:39

9 – 8 + 7 + 65 – 4 + 32 – 1 = 100