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WAEC 2020 · Paper 1 · Q1

Evaluate and correct to two decimal places: 75.0785−34.624+9.8375.0785 - 34.624 + 9.83.

Worked solution (try it first)
  1. Work from left to right: 75.0785−34.624=40.454575.0785 - 34.624 = 40.4545.
  2. Add: 40.4545+9.83=50.284540.4545 + 9.83 = 50.2845.
  3. To 2 decimal places, the third decimal is 4, so round down: 50.28, option C.

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