Find the sum by suitable rearrangements: 1) 425+(-207)+75
2) -142+311+(-58)
3) 236+728+(-228)
4) 143+(-567)+257+167
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2
Answer:
1) 293
2) 111
3) 736
4) 0
Step-by-step explanation:
1) 425+(-207)+75
=425-207+75
= 218+75
=293
2) -142+311+(-58)
-142+311-58
= 169-58
= 111
3) 236+728+(-228)
=236+728-228
= 964-228
= 736
4). 143+(-567)+257+167
143-567+257+167
-424+257+167
-167+167
= 0
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