History · Grades 9–12
Years between historical events
Study guide for Grades 9 to 12: 2 worked examples and 2 practice questions. Subtract the earlier year from the later one. Use the gap to judge whether one event could have influenced another.
Rule and key idea
Subtract the earlier year from the later one. Use the gap to judge whether one event could have influenced another.
years between = later year − earlier year
Worked examples
How many years passed between these events? • Delegates met at the Charlottetown Conference (1864) • The United Nations was founded (1945)
1945 − 1864 = 81
81
How many years passed between these events? • The Russian Revolution brought the Bolsheviks to power (1917) • Allied troops landed in Normandy on D-Day (1944)
1944 − 1917 = 27
27
Try two questions
How many years passed between these events? • The Hudson’s Bay Company received its royal charter (1670) • The last spike of the Canadian Pacific Railway was driven (1885)
How many years passed between these events? • Martin Luther published his Ninety-five Theses (1517) • The Canadian Bill of Rights was passed (1960)
Answers and reasoning
Answers and marking notes
- 215
1885 − 1670 = 215
- 443
1960 − 1517 = 443
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