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## What's 2 x 3 + 4 x 1 + 6 x 0 ?

(1001 Posts)
mirai Thu 10-Oct-13 04:37:05

I work (abroad) in a school and I've just observed a lesson with this sum written on the blackboard.

The teacher gave an answer but I'm not sure it's the right one... So I want to see what MN thinks!!

Timpetill Thu 10-Oct-13 04:38:28

10?

Kahlua4me Thu 10-Oct-13 04:39:29

0

emblosion Thu 10-Oct-13 04:39:39

16?

Gobbolinothewitchscat Thu 10-Oct-13 04:40:43

0

Thu 10-Oct-13 04:40:53

16

Flossie82 Thu 10-Oct-13 04:41:48

10
brackets, multiply / divide, add / subtract

FriendlyElephant Thu 10-Oct-13 04:42:30

10

CharityFunDay Thu 10-Oct-13 04:43:07

The BODMAS rule would indicate that it's 16.

Disclaimer: I have dyscalculia.

emblosion Thu 10-Oct-13 04:43:15

Should there be brackets in the equation? Because that effects how you do it...

fuzzpig Thu 10-Oct-13 04:44:44

Ten

Multiplication is done before addition so it's

(2x3)+(4x1)+(6x0)=6+4x0=10

Thu 10-Oct-13 04:45:34

No its 10

NicholasTeakozy Thu 10-Oct-13 04:45:47

As it's written, 10. If it was bracketed it would be 0. Depending on where the brackets were placed. So, (2x3+4x1+6x0)=0.

I think.

rosemount Thu 10-Oct-13 04:46:02

I get 10. What did teacher say?

oranges007 Thu 10-Oct-13 04:48:32

0?

Puzzledmoo Thu 10-Oct-13 04:48:59

10

Thu 10-Oct-13 04:50:00

Zero . The last calculation is x0 and anything times zero is zero.

PrincessRomy Thu 10-Oct-13 04:53:53

10

PrincessRomy Thu 10-Oct-13 04:54:28

What answer did the teacher give?

coffeeinbed Thu 10-Oct-13 04:55:19

The last multiplication only relies to the 6, so you add the resulting 0.
It's 10

mirai Thu 10-Oct-13 04:55:50

Blimey! I didn't think so many people would be up, morning everyone

Well, putting my reputation on the line here, I get 10. Because there were no brackets, so order of operations/BODMAS must be used, which gives:

6 + 4 + 0 = 10

Teacher was saying 0 though, as anything times by zero is zero.

Hmm.

Flossie82 Thu 10-Oct-13 04:58:57

No Nicholas, if you put brackets around it all it would be the same as without brackets!

(2 x 3 plus 4 x 1) x 0 would be 0

sorry, can't find plus sign on phone keyboard!

Flossie82 Thu 10-Oct-13 05:00:31

as it is written, definitely 10!

DottyboutDots Thu 10-Oct-13 05:10:12

10. X first then + up the totals.

coffeeinbed Thu 10-Oct-13 05:15:22

Flossie's right
Besides the whole thing cannot be in brackets because brackets only show the priority, do you can't bracket the whole transaction
That teacher would worry me tbh

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