Question

Resolva as 15 expressões, lembre de deixar o passo a passo

1) 15 + 5 x 2 - 7 =

2)4 + 8² : 2 =

3) (3 - 1)³ x 5 + 12 =

4) 50 - 2 x ( 9 + 7 ) =

5) 20 : (2 + 3 x 6) =

6) 20 : (2 + 3) x 6 =

7) 132 : 3 x 0,2 =

8) 25 x 4 : 2 =

9) 2 + 1)² - 2 x 4 =

10) 340 - (25 x 9 + 47) =

11) 145 - 2 x 5² =

12) 180 - (25 - 3 x 5)² =

13) 13 x (100: 5 - 13)² =

14) (1,5 - 3 x 0,4)³ =

15) 5 + 4 : 2 - 2 x 2 =

Answer 1

1) 15+5x2-7=15+14-7=29-7=22

2)

$4 + {8}^{2} \div 2 = 4 + 64 \div 2 = 4 + 32 = 36$

3)

${(3 - 1)}^{3} \times 5 + 12 = {2}^{3} \times 5 + 12 = 8 \times 5 + 12 = 40 + 12 = 52$

4) 50-2x(9+7)=50-2x16=50-32=18

5) 20:(2+3x6)=20:(2+18)=20:20=1

6) 20:(2+3)x6=20:5x6=4x6=24

7) 132:3x0.2=44x0.2=8.8

8) 25x4:2=100:2=50

9)

${(2 + 1)}^{2} - 2 \times 4 = {3}^{2} - 2 \times 4 = 9 - 8 = 1$

10) 340-(25x9+47)=340-(225+47)=340-272=68

11)

$145 - 2 \times {5}^{2} = 145 - 2 \times 25 = 145 - 50 = 95$

12)

$180 - {(25 - 3 \times 5)}^{2} = 180 - {(25 - 15)}^{2} = 180 - {10}^{2} = 180 - 100 = 80$

13)

$13 \times {(100 \div 5 - 13)}^{2} = 13 \times {(20 - 13)}^{2} = 13 \times {7}^{2} = 13 \times 49 = 637$

14)

${(1.5 - 3 \times 0.4)}^{3} = {(1.5 - 1.2)}^{3} = {0.3}^{3} = 0.027$

15) 5+4:2-2x2=5+2-4=7-4=3