Question

a, (-123) - /-13/ + (-7)

b, 35- (4.5² - 5.2³) + 2019

c, 75+ (-20) + (-30)

d, 135.27-27.35+150

e, (8-5)³ +7 mũ 7 : 7 mũ 5 + 2019

g, 737737. 255 - 255255. 737

h, 45- /-15/ : 3

f, 160 : {/-17/+ [3².5- (14 + 2¹¹ : 2 mũ 8]}

Thực hiện phép tính nhanh nếu có thể

Answer 1

a, (-123) -|-13| +(-7)

= (-123) -13+(-7)

= -136 + (-7)

= -143

b, 35- (4.5² - 5.2³) + 2019

= 35- (4. 25 - 5.8) + 2019

= 35- ( 100 - 40) + 2019

= 35 - 60 +2019

= -25 + 2019

= 1994

c, 75+ (-20) +(-30)

= 55 + (-30)

= 25

d, 135. 27- 27.35 +150

= 27.(135 - 35) +150

= 27. 100+ 150

= 2700 + 150

= 2850

e, (8-5)³ + 7⁷ : 7⁵ + 2019

= 3³ +( 7⁷ : 7⁵ ) + 2019

= 3³ +7² + 2019

= 27 + 49 + 2019

= 76 + 2019

= 2095

g, 737737. 255 - 255255. 737

= 737. 1001. 255 - 255. 1001. 737

=[( 737. 255) - (255. 737)] .1001

= 0. 1001

= 0

h, 45-|-15| : 3

= 45 - 15 : 3

= 45 - 5

= 40

f, 160 : {|-17| + [3² . 5-(14+ 2¹¹ : 2⁸)]}

= 160 : { 17 +[ 9 . 5- (14 + 2³)]}

= 160 : { 17 +[ 9 . 5- (14 + 8)]}

= 160 : [17 +( 9 . 5- 22)]

= 160 : [17 +( 45- 22)]

= 160 : ( 17 + 23)

= 160 : 40

= 4