3.5² - 16 : 2²

= 3 . 25 - 16 : 4

= 75 - 4 = 71

\(3.5^2-16:2^2\)

\(=3.25-16:4\)

\(=75-4\)

\(=71\)

a, = 3.25 + 15.4 - 16 : 2 = 75 + 60 - 8 = 135 - 8 = 127

a: =75+60-8=127

3.5^2-16:2^2

=3.25-16 : 4 ( 2^2 = 4)

75-4

=71

  3.5^2-16:2^2

=3.25-16:2

=75-8

=67.

a: \(35\cdot20+125:5^2\)

\(=700+\frac{125}{25}\)

=700+5=705

b: \(5^2\cdot8-60:2^2\)

\(=25\cdot8-60:4\)

=200-15

=185

c: \(4500:15+3^4\cdot10\)

=300+81*10

=300+810

=1110

d: \(175-\left\lbrack3\cdot5^2-5\cdot3^2\right\rbrack\)

\(=175-\left(3\cdot25-5\cdot9\right)\)

=175-(75-45)

=175-30

=145

e: 555:5+\(256:16^2\)

=111+256:256

=111+1

=112

a: =5-78*32

=5-2496

=-2491

b: \(=6\left(9-6\right)=6\cdot3=18\)

c: \(=46\cdot\dfrac{\left(123-42\right)}{81}=46\)

d: \(=181+3-84+8\cdot25\)

=100+200

=300

e: \(=64\cdot35+140\cdot84-1=2240-1+11760\)

=14000-1

=13999

f: \(=3^3+25\cdot8-1=26+200=226\)

g: \(=3+2^4+1=16+4=20\)

h: \(=36:4\cdot3+2\cdot25-1=27+50-1=27+49=76\)

a) 3.5³ - 16 : 2² = 3 . 125 - 16 : 4 = 375 - 109 = 266.

b) 2448 : [119 : (23-6)] = 2448 : (119 : 17) = 2448 : 7 = 349,714...

a: \(10^2-\left\lbrack60:\left(5^6:5^4-3\cdot5\right)\right\rbrack\)

\(=100-60:\left\lbrack5^2-15\right\rbrack\)

=100-60:10

=100-6

=94

c: \(500-\left\lbrace5\cdot\left\lbrack409-\left(2^3\cdot3-21\right)^2\right\rbrack+10^3\right\rbrace:15\)

\(=500-\left\lbrace5\cdot\left\lbrack409-\left(24-21\right)^2\right\rbrack+1000\right\rbrace:15\)

=500-{\(5\cdot\left\lbrack409-9\right\rbrack+1000\) }:15

=500-{2000+1000}:15

=500-3000:15

=500-200

=300