Question

this is 7th grade.chapter is integers.can you find jacks score at the end please.​

Answer 1

Answer:

Positive marks = correct answer

Negative marks = incorrect answer

Now we know that to find the sum of anything we have to do addition . Since we are going to find Jack's total score we have to add all his scores .

Marks scored by Jack in five successive rounds of a quiz = 25 , -5 , -10 , 15 , 10

Jack's total score in the end :

= 25 + ( -5 ) + ( -10 ) + 15 + 10

= 25 + ( -5 ) = 20 ( + and - will become - and we have to add the sign of the larger number 25 which is + , hence we are getting +20 or 20 )

= 20 + ( -10 ) = ( + and - will become - and we have to add the sign of the larger number 15 , which is + , hence we are getting + 10 or 10 )

= 10 + 15 + 10

= 25 + 10

= 35 .

Therefore , Jack scored 35 marks as his total in the end of the quiz .

Hope you find my answer useful!!!