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SEAMO 2020 — Paper B — Grade 3–4 Question 12

SEAMO · SEAMO 2020 — Paper B — Grade 3–4

Question 12

Evaluate $1-2+3-4+5-6+7-\cdots-2018+2019$.
  1. $840$
  2. $1010$
  3. $1060$
  4. $2000$
  5. $2018$