Chapter 2: Fractions and Decimals

Answer Key (For Teachers)

1. Answer: $\dfrac{2}{5}$.
   Working: Cancel: $7,35\to 1,5$; $9,18\to 1,2$.
2. Answer: $0.09$.
   Working: $45/500$.
3. Answer: $3\tfrac{4}{15}$.
   Working: $= \dfrac{7}{3}\cdot\dfrac{7}{5} = \dfrac{49}{15}$.
4. Answer: $9/6 = 3/2$
   Working: LCM $6$: $4/6 + 5/6$.
5. Answer: $2/3$
   Working: $30/45 = 2/3$.
6. Answer: $6/5$
   Working: Multiply by reciprocal: $4/5\times 3/2$.
7. Answer: $0.28$
   Working: $28$; two decimal places.
8. Answer: $8.00$
   Working: Align decimals.
9. Answer: $6.4$
   Working: Long division.
10. Answer: $3/10$
    Working: Multiplication.