Find the sum of:

Other · Multi-part · GCSE · Mathematics · Number · Integers and Four Operations

Problem

Find the sum of: (1) 5+8+11+14+⋯+1015 + 8 + 11 + 14 + \dots + 101 (2) 37+33+29+25+⋯+937 + 33 + 29 + 25 + \dots + 9 (3) 50+4912+49+4812+⋯+(−20)50 + 49\frac{1}{2} + 49 + 48\frac{1}{2} + \dots + (-20) (4) 8+1012+13+1512+⋯+838 + 10\frac{1}{2} + 13 + 15\frac{1}{2} + \dots + 83

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