Question

Exercitiul 1:(desfasurat) a) 180-136+283
b) 303:3x14
c)52:2+49
d)378-9x35
e)8x23+52x12
f)636:4-426:3

Exercitiul 2: (desfasurat) a)125:5+(13+64:2)
b) (37-18:2):7+108:2
c) 6x9:[6-(13-18:2)]
d) [(9-6)x(8+9)] +100 : (4+6)

Exercitiul 3: a) De cate ori este mai mare suma numerelor 387 fata de diferenta numerelor 2466 si 3366?
b) Cu cat este mai mare suma numerelor 784 si 594 decat diferenta lor?
c) Afla jumatatea produsului dintre diferenta numerelor 87 si 52 si cea a numerelor 308 si 292

Urgent va rog

Answer 1

Răspuns:

1.a)180-136+283=316+283=599

b)303:3×14=101×14=1414

c)52:2+49=26+49=75

d)378-9×35=378-315=63

e)8×23+52×12=184+624=808

f)636:4-426:3=134-142=8

2.a)125:5+(13+64:2)=25+(13+32)=25+45=70

b)(37-18:2):7+108:2=(37-9):7+54=28:7+54=4+54=58

c)6×9:[6-(13-18:2)]=54:[6-(13-9)]=54:(6-4)=54:2=27

d)[(9-6)×(8+9)]+100:(4+6)=(3×17)+100:10=51+10=61

3.

a)2466+3366=5832

3366-2366=900

5832-900=4932

b)784+594=1378

784-584=200

1378-200=1178

c)87-52=35

308-292=16

35×16=560

560:2=280