Question

1/ Tính

a/ 7-20+313 b/ (-163)+177-(377-263)

c/ (325-47)+(175-53) d/ (217-756)-(41-183)

Answer 1

a/ \(7-20+313\)

\(=\left(-13\right)+313\)

\(=300\)

b/ \(\left(-163\right)+177-\left(377-263\right)\)

\(=\left(-163\right)+177-114\)

\(=14-114\)

\(=-100\)

c/\(\left(325-47\right)+\left(175-53\right)\)

\(=278+122\)

\(=400\)

d/\(\left(217-756\right)-\left(41-183\right)\)

\(=\left(-539\right)-\left(-142\right)\)

\(=-397\)

\(=-100\)

Answer 2

a/ 7 - 20 + 313

= - 13 + 313

= 300

b/ (-163) + 177 - (377 - 263)

= (-163) + 177 - 377 + 263

= [(-163) + 263] + (177 - 377)

= 100 + (-200)

= -100

c/ (325 - 47) + (175 - 53)

= 325 - 47 + 175 - 53

= (325 + 175) - (47 + 53)

= 500 - 100

= 400

d/ (217 - 756) - (41 - 183)

= 217 - 756 - 41 + 183

= (217 + 183) - ( 756 + 41)

= 400 - 797

= -397

Answer 3

a,\(7-20+313=300\)

b,\(\left(-163\right)+177-\left(377-263\right)\)

\(=14-114=-100\)

c,\(\left(325-47\right)+\left(175-53\right)\)

\(=325-47+175-53\)

\(=500-100=400\)

d,\(\left(217-756\right)-\left(41-183\right)\)

\(=217-756-41+183\)

\(=-397\)

Answer 4

a ) 7 - 20 + 313

= ( - 13 ) + 313

= 300

b ) ( - 163 ) + 177 - ( 377 - 263 )

= ( - 163 ) + 177 - 114

= 14 - 114

= - 100

c ) ( 325 - 47 ) + ( 175 - 53 )

= 278 + 122

= 400

d ) ( 217 -756 ) - ( 41 - 183 )

= ( - 539 ) - ( - 142 )

= ( - 539 ) + 142

= - 397