1) +1-2+3-4+5-6+7-8+9-10

2) -931-723+941-265

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Solution

1) +1-2+3-4+5-6+7-8+9-10

Ans:
1+3+5+7+9-(2+4+6+8+10)
= 25 -(30)
=25 - 30
= -5

2) -931-723+941-265

Ans:
941 - (931+723+265)
= 941- (1919)
= - 978

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1) +1-2+3-4+5-6+7-8+9-10 2) -931-723+941-265

1) +1-2+3-4+5-6+7-8+9-10 Ans: 1+3+5+7+9-(2+4+6+8+10) = 25 -(30) =25 - 30 = -5 2) -931-723+941-265 Ans: 941 - (931+723+265) = 941- (1919) = - 978

1) +1-2+3-4+5-6+7-8+9-10

2) -931-723+941-265

1) +1-2+3-4+5-6+7-8+9-10

Ans:
1+3+5+7+9-(2+4+6+8+10)
= 25 -(30)
=25 - 30
= -5

2) -931-723+941-265

Ans:
941 - (931+723+265)
= 941- (1919)
= - 978