Pop Quiz

5 decades = ______________years

• 40

• 60

• 50

• 70

Maddie is 78 years old. What is her age in decades after 2 years?

• 8 decades

• 7 decades

• 9 decades

• 70 decades

John returned to Asia after 7 decades in Europe. How many years did John spend in Europe?

• 700 years

• 7 years

• 70 years

• 30 years

2 decades 3 years + 4 decades 6 years = _______?

• 6 decades 10 years

• 5 decades 10 years

• 5 decades 15 years

• 6 decades 9 years

Find 4 decades 6 years − 2 decades 3 years =

• 2 decades 9 years

• 5 decades 10 years

• 3 decades 3 years

• 2 decades 3 years

Alisa stayed in two cities for 2 decades 8 years and 1 decade 5 years. How long did she stay more in the first city?

• 1 decades 2 years

• 1 decades 1 year

• 1 decade 3 years

• 6 years

Nathan is 89 years old and his son is 63 years old. Calculate their age difference in decades and years.

• 2 decades

• 2 decades 5 years

• 2 decades 6 years

• 26 years

Jane stayed in two cities for 2 decades 1 year and 1 decade 8 years. How long did he stay in both cities?

• 3 decades 2 years

• 3 decades 9 years

• 3 decades 20 years

• 4 decades 6 years

The average lifespan of a Persian cat is 19 years. Write it in decades.

• 1 decade 9 years

• 19 decades

• 2 decades

• 1 decade

The oldest building in a city was built in 1840. By 2017, how old is this building?

• 16 decades

• 17 decades

• 18 decades

• 17 decades 7 years