simple math I forgot

[darwin]

my daughter has a math proplem that I cannot figure out . her teacher told the class "use (),x,-,/, and + to solve for this arrangment. Use these symbols to make the problems correct. 1= 4_4_4_4. the anwser here is 1=(4-4)+4/4. next is 2=4_4_4_4 the answer: 2= (4/4)+(4/4). next is 3=4_4_4_4 answer: 3=(4+4)+4/4. next 4=4_4_4_4 answer : 4=(4-4)x4+4. 5=4_4_4_4 answer: 5=(4x4)+4/4 . 6=4_4_4_4 answer 6=(4+4)/4+4. all the wa to 10=4_4_4_4 I cannot figure out 7=,9=, or 10= please help

 

[Denis]

7: 4 + 4 - 4/4

9: 4 + 4 + 4/4

For 10, can only come up with:
4 + 4 + 4 - sqrt(4) : are you sure "square root" not permitted?

Another way is use .4 : 4/.4 + 4 - 4 = 10

BUT if 44 can be used, then: (44 - 4) / 4 = 10

 

[darwin]

thanks for the help. I'm not sure if square root could be used or not. teacher didn't send any written directions home with her. Anyway, thank you much. I may need alot more of it!
don't stress the wearwolf thing , I used to be an owl but, who.. whoo.. whooo could tell now.

 

[soroban]

$\displaystyle \text{If factorials are allowed, we have: }\;10 \;=\;4 \times 4 - \frac{4!}{4}$

$\displaystyle \text{If decimal points are allowed, we have: }\;10 \;=\;\frac{44}{4.4}$

 

[Denis]

I used to be an owl but, who.. whoo.. whooo could tell now.

Bartender to me: hey Jackass, another drink?
Another customer to me: gee, he's not nice...
Me: Hawww Hehawwwlways calls me that :roll:

 

[b.morales99]

$\displaystyle \text{If factorials are allowed, we have: }\;10 \;=\;4 \times 4 - \frac{4!}{4}$

$\displaystyle \text{If decimal points are allowed, we have: }\;10 \;=\;\frac{44}{4.4}$

I believe this is the easiest way to do it.