Question

Completeaza spatiile punctate cu semnele "+,-,×,÷".

3 3 3 3 =5
4 4 4 4 =3
4 4 4 4 =6
4 4 4 4 =7
7 7 7 7 =3
7 7 7 7 =8
7 7 7 7 =49
8 8 8 8 =80
8 8 8 8 =10
8 8 8 8=504
9 9 9 9 =10
9 9 9 9 =19
9 9 9 9 =18

Answer 1

     
$(3 + 3) : 3 + 3 = 5 \\ (4 +4+ 4) : 4 = 3 \\ (4 +4) : 4 + 4 =6 \\ 44: 4 -4 =7 \\ (7 +7+ 7): 7 =3 \\ \sqrt{7*7}: 7 +7 =8 \\7*7*7:7 =49 \\ 8* 8+ 8 +8 =80 \\ (8 + 8) :8 +8 =10 \\ 8 *8* 8- 8=504 \\ \sqrt{9* 9} :9 +9 =10 \\ 9 :9+ 9+ 9 =19 \\ 9 +9+ 9- 9 =18$

$\text{In afara de " + , - , * , : ", am mai folosit: } \\ \cdot paranteze \\ \cdot alaturarea\;a\;doua\;cifre\;pentru\;a\;forma\;un\;numar \\ \cdot radical$